Useful information

[amberleaf]

Sample Questions C&G 2392-10 Certificate in Fundamental Inspection & Testing - paper 2

( 1 ) The person who tests and signs the Electrical Installation Certificate for an Electrical Installation should be ?
A – The owner of the Installation ,
B – The Electrical Contractor who carried out the work ,
C – A representative of the Owner of the premises ,
D – A Competent person from an inspection and test company ,

( 2 ) Before commencing an initial inspection and test , the inspector should have a copy of the ?
A – Heath and Safety at Work Act ,
B – Electricity at Work regulations 1989 ,
C – Guidance Note 1 – Selection and Erection ,
D – Installation Specification ,

( 3 ) Which of the following information is “ Not “ required by the person carrying out the inspection and test ?
A – The prospective fault current at the origin of the installation ,
B – The external loop impedance ( Ze ) ,
C – information on the manufacturer of the electrical equipment used in the ,
D – the method used for fault protection ,

( 4 ) Which of the following should accompany the inspection and test ?
A – two copies of test results ,
B – copies of the inspection and test schedules ,
C – copies of minor works certificates ,
D – invoices for any remedial work carried out ,

( 5 ) Which of the following statement is false ?
A – Inspection & Testing may be done in an order decided by the test engineer ,
B – Installations must be inspected and tested on completion and also during erection ,
C – The purpose of the inspected is to verify equipment is correctly selected and erected in accordance with BS7671 ,
D – Precautions shall be taken to avoid damage to property during Inspection & Testing ,

( 6 ) Which one of the following does not need to be checked for compliance during the visual Inspection of an installation , ?
A – Presence of fire barriers ,
B – Correct connection of the supply authority’s fuse ,
C – Routing of cables in safe zone ,
D – Connection of single pole device in phase conductors’ only ,

( 7 ) A visual Inspection is necessary before testing to check whether ?
A – There is adequate access to switchgear ,
B – The Zs is within the maximum allowed ,
C – The polarity of switches’ and fuses are correct ,
D – The insulation resistance is acceptable ,

( 8 ) The top surface of a consumer unit should be protected from ingress of dust to a standard of ?
A – IP2X B – IP4X C – IP5X D – IP6X

( 9 ) During Inspection of a distribution board containing exposed conductive parts it should be verified that ?
A – The board is situated at least 2 meters above ground level ,
B – The board has a handle and the door is shut ,
C – The door can only be opened with a key or tool ,
D – The board has at least ingress protection to IP2X ,

( 10 ) When inspecting a conductor used for circuit protection it must be verified that the conductor is ,
A – Green or green and yellow throughout its length ,
B – green and yellow for at least 100mm at both ends ,
C – Marked with numerals at both ends ,
D – Green and yellow throughout its length ,

( 11 ) Which one of the following tests can only be carried out after supply is connected ,
A – Earth fault loop impedance ,
B – Insulation resistance ,
C – Polarity , D – Continuity of the protective conductors’ ,

Sample Questions C&G 2392-10 Certificate in Fundamental Inspection & Testing - paper 2

( 12 ) The minimum test voltage that should be applied when testing the insulation resistance of a SELV circuit is , ?
A – 500v - dc B – 500v - ac C – 250v - dc D –250v - ac

( 13 ) Given the following numbered tests, select the sequence in which these tests should be conducted for a new installation : ?
1 , functional , 2 , insulation resistance , 3 , polarity , 4 , continuity of final ring conductors’ , 5 , continuity of protective conductors’
A – 1,3,4,5,2, B – 4,5,3,2,1, C – 5,4,2,3,1, D – 2,3,4,5,1,

( 14 ) Insulation resistance testers are designed to measure ?
A – High resistance using an ac voltage ,
B – Low resistance using an ac voltage ,
C – Low resistance using an dc voltage ,
D – High resistance using an dc voltage ,

( 15 ) An approved voltage tester can be used to ?
A – Establish whether a circuit conductor is live or not ,
B – Determine the effectiveness of a disconnection device ,
C – Measure the resistance of an earth continuity conductor ,
D – Carry out continuity tests ,

( 16 ) The purpose of the test button of residual current device is to check the ?
A – Earth fault loop impedance ,
B – Continuity of the earthing conductor ,
C – Earth electrode resistance ,
D – Mechanical operation of the rcd ,

( 17 ) Statement 1, – A polarity test is carried out with a loop tester , Statement 2 , A polarity test can confirm correct connection of conductors within an Edison screw lamp
A – Statement 1 is true , Statement 2 is false ,
B – Both Statement are true ,
C – Statement 1, is false , Statement 2 is true ,
D – Both Statement are false ,

( 18 ) Which one of the following tests should be conducted to verify protection by electrical separation of ELV and LV circuits ?
A – Verification of protection by barriers or enclosures to minimum of IP5X
B – An insulation resistance test at 500v dc , between ELV and LV circuits ,
C – testing between conductors’ of each ELV circuit at 250v dc ,
D – An insulation resistance test between ELV and LV circuits at 250v dc

( 19 ) The schedule for an electrical installation should include the following ?
A – Date of completion
B – Recommended dates for future periodic testing ,
C – BS numbers of all equipment within the installation ,
D – The rating and type of protective devices ,

( 20 ) For circuits having a nominal voltage of 230v , the minimum insulation resistance required is ?
A – 5.0 MΩ B – 1.0MΩ C – 0.5MΩ D – 0.25MΩ

( 21 ) When an Electrical Installation Certificate is issued , any defects or Omissions must be ?
A – Made good
B – Identified
C – Noted on the certificate
D – Notified to the client

( 22 ) The maximum earth loop impedance to BS 7671 : 2008 for a circuit protected by a 20A BS-88 ( gG )
Fuse given a 5 second disconnection time is ?
A – 7.42 Ω B – 2.91 Ω C – 1.84 Ω D – 1.35 Ω

( 23 ) The maximum disconnection time allowed for a TN systems with a nominal voltage of 250v ac , to earth is ?
A – 0.2 seconds B – 0.4 seconds C – 1 seconds D – 5 seconds

( 24 ) What is the maximum earth fault loop impedance allowed when using a 32A Type C circuit breaker
Giving a disconnection time of 5seconds , the nominal voltage to earth ( Uo ) is 55V ,
A – 0.34 Ω B – 0.40 Ω C – 0.17 Ω D – 0.09 Ω

Sample Questions C&G 2392-10 Certificate in Fundamental Inspection & Testing - paper 2

( 25 ) A insulation resistance test is carried out on a single-phase 230v circuit, the minimum acceptable reading and correct test voltage to BS 7671 : 2008 should be ?
A – 0.5 MΩ and 250v dc , B – 1.0 MΩ and 500v dc , C – 0.5 MΩ and 500v dc , D – 2.0 MΩ and 500v dc ,

( 26 ) A circuit has an external earth loop impedance Ze of 0.6 Ω , the maximum value of ( R1 + R2 ) to BS 7671 : 2008 , on a circuit protected by a Type B 32A circuit breaker giving a 0.4 seconds disconnection time will be ?
A – 1.44 Ω B – 2.04 Ω C – 0.84 Ω D – 0.24 Ω

( 27 ) Any faults or defects identified an initial verification should be ?
A – Made good immediately ,
B – Noted on the certificate before issuing it to the client ,
C – Noted on the certificate and arrange to complete repairs ,
D – Made good before issuing the certificate ,

( 28 ) The type of certificate is issued after installing an additional socket outlet within an existing installation would be a ?
A – Minor Certificate ,
B – Verification and Test Certificate ,
C – Installation Certificate ,
D – Periodic Test Certificate ,

( 29 ) Which of the following tests is carried out on a “ live “ circuits ,
A – Insulation resistance ,
B – Earth fault loop impedance ,
C – Continuity of final ring circuit conductors ,
D – Polarity by Continuity methods ,

( 30 ) End-to-end resistance checks would be carried out on a ,
A – Radial circuit ,
B – Lighting circuit ,
C – Ring final circuit ,
D – Fused connection unit ,


( 1 )- B ( 2 )- D ( 3 )- C ( 4 )- B ( 5 )- A ( 6 )- B ( 7 )- A ( 8 )- B ( 9 )- C ( 10 )- D ( 11)- A ( 11) - A ( 12 )- C ( 13 )- C
( 14 )- D ( 15 )- A ( 16 )- D ( 17 )- C ( 18 )- B ( 19 )- D ( 20 )- B ( 21 )- A ( 22 )- B ( 23 )- A ( 24 )- C ( 25 )- B ( 26 )- C ( 27 )- D ( 28 )- A ( 29 )- B ( 30 )- C

( 24 ) What is the maximum earth fault loop impedance allowed when using a 32A Type C circuit breaker
Giving a disconnection time of 5seconds , the nominal voltage to earth ( Uo ) is 55V ,
A – 0.34 Ω B – 0.40 Ω C – 0.17Ω ↔ ( regs : 41.6 ) ۝ D – 0.09 Ω

Ps , they is a very very small little red heron in here guess which one , the clock is ticking ?

 

[amberleaf]

Sample Questions – C&G 2392-10 Paper 1 Books out Boys & Girls !!!!

( 1) On completion of a new installation , the Electrical Installation Certificate would “ NOT “ be signed by the ,
A – Design Engineer ,
B – Client ,
C – Person who constructed the installation ,
D – inspection and testing engineer ,

( 2 ) Before inspection the condition of electrical equipment installed in a New unoccupied building ,
The inspector should ,
A – Ask the builders if they are aware of any faults , ( ps bloody foreigners would )
B – Disconnect all fluorescent luminaires ,
B – Test run the equipment to ascertain its condition ,
D – Check for components that may be susceptible to damage during testing ,

( 3 ) Any addition to an existing installation should ,
A – Have a similar wiring system to used in the existing installation ,
B – Be inspected & tested separate from the existing installation ,
C – Not impair the safety of the existing installation ,
D – Have its own energy meter separate from that of the existing installation ,

( 4 ) Which of the following duties is “ not “ the responsibility of the inspector ,
A – To carry out maintenance and repairs on the installation ,
B – To compare the test results with the design criteria ,
C – To advise on remedial works ,
D – To recommend the immediate isolation of defective parts ,

( 5 ) Records of inspections and test results should be kept during the life of an installation , this will enable ,
A – Identification of defective parts ,
B – Deterioration to be identified ,
C – Landlords to carry out repairs ,
D – Correct selection of equipment ,

( 6 ) According to BS 7671 , no additions or alterations should be made to an existing installation unless ,
A – The completion certificate can be produced for the existing installation ,
B – A Minor Works Certificate can be produced ,
C – The permission of the supply company has be obtained ,
D – The existing installation conforms to current Regulations ,

( 7 ) Which of the following is not a requirement of the inspection check list ,
A – Availability of customer user instructions ,
B – Presence of a BS mark or other suitable certification ,
C – Correct selection of cable and protection devices ,
D – No visible damage ,

( 8 ) Inspection of fully enclosed domestic consumer unit would not need verification for ,
A – Identification of conductors ,
B – Rating and type of protective devices ,
C – IP rating ,
D – Correct connection of single – poles devices ,

( 9 ) When inspecting for adequate protection against direct contact which of the following
Does not require inspection , Presence and condition of ,
A – Insulation ,
B – Enclosures’ ,
C – Barriers ,
D – Connection of cpcs ,

( 10 ) A visual inspection of a new installation must be carried out ,
A – After completion of the installation ,
B – After testing ,
C – After erection and before testing ,
D – During erection and before testing ,

( 11 ) Which one of the following tests can only be carried out after the supply is connected ,
A – Prospective fault current ,
B – Insulation resistance ,
C – Polarity ,
D – Continuity of protective conductors ,

( 12 ) Which one of the following procedures would be correct , if permission to disconnect information technology
Equipment has not been received ,
A – Apply insulation an earth continuity test only ,
B – Disconnect equipment momentarily and apply tests ,
C – Do not apply to any tests ,
D – Apply rcd test only ,

( 13 ) The test voltage that should be applied when testing the insulation resistance of a domestic ring circuit is ,
A – 500v dc B – 500v ac C – 250v dc D – 250v ac

( 14 ) Which of the following is the most suitable instrument to conduct a polarity test ,
A – A high resistance ohmmeter ,
B – A bell set ,
C – An insulation resistance tester ,
D – A low resistance ohmmeter ,

( 15 ) A continuity test at each socket-outlet of a ring circuit is carried out to make sure that ,
A – All readings are within the maximum Ze values required ,
B – No multiple loop exist ,
C – All conductors are correctly insulated ,
D – The polarity of all the sockets is correct ,

( 16 ) The following tests are to be carried out on a circuit : 1 polarity : 2 , continuity of protective conductors : 3 , Earth fault loop impedance : 4 , insulation resistance , which of the following is correct sequence in Which the tests should be carried out ,
A – 1,2,3,4, B – 1,3,2,4, C – 2,4,1,3, D – 4,2,1,3,

( 17 ) When carrying out an insulation resistance test between conductors on a one-way lighting circuit , have the ,
A – Switch closed and lamp out ,
B – Switch open and lamp in ,
C – Switch open and lamp out ,
D – Switch closed and lamp in ,

( 18 ) The insulation resistance of two circuits is of 40MΩ an 36MΩ respectively , when tested together what would be approximately the total insulation resistance ,
A – 1440MΩ B – 76MΩ C – 19MΩ D – 4MΩ

( 19 ) The outer contact of a centre-contact ( ES ) lampholder , must be connected to the ,
A – Phase conductor B – Neutral conductor , C – Switch wire , D – Earth conductor

( 20 ) A 30mA rcd is used to provide supplementary protection against electric shock , when tested with a current of 150mA , the operating time should not exceed ,
A – 40mS B – 200mS C – 0.4s D – 5.0s

( 21 ) Where electrical accessories have neon indicator lamps inaccurate readings can occur when tests are carried out to determine the resistance between ,
A – Insulation between phase & neutral conductors ,
B – Phase & cpcs ,
C – Neutral & earth conductors’ ,
D – Live conductors’ & earth ,

( 22 ) A legible diagram , chart or table relating to an installation must be provided to indicate ,
A – Any equipment vulnerable to a test ,
B – The location of all socket-outlets ,
C – The expected life of the installation ,
D – Any modifications made to the installation ,

( 23 ) An insulation test carried out on insulated cables should be in the range ,
A – milliΩ B – micro Ω C – ohms D – megohms

( 24 ) The maximum earth loop impedance to BS 7671 : 2008 for a circuit protected by a 32A type C mcb with a disconnection time of 0.4 sec is ,
A – 1.44Ω B – 0.72Ω C – 0.36Ω D – 1.04Ω

( 25 )When carrying out a prospective short circuit fault current test on a three phase system the approximate fault current between phases should be ,
A – Equal to the fault current between one phase and neutral
B - Equal to the fault current between two phase and neutral
C - Equal to the fault current between one phase and earth ,
D – Double the fault current between one phase and neutral ,

( 26 ) Which of the following tests would be carried out on a “ dead “ circuit ,
A – Earth fault loop impedance ,
B – Prospective fault current ,
C – Rcd functional testing ,
D – Continuity of ring circuit conductors ,

( 27 ) The maximum disconnection time allowed for a TN system with a nominal voltage of ,
A – 0.2 sec , B – 0.4 sec , C – 1 sec , D – 5 sec ,

( 28 ) A insulation resistance test is carried out on a three-phase 400V circuit , the minimum acceptable reading and test voltage should be ,
A – 0.5MΩ and 250v dc , B – 0.5MΩ and 500v dc , C – 1.0MΩ and 500v dc , D – 2.0MΩ and 500v dc ,

( 29 ) What is the maximum earth fault loop impedance allowed when using a 20A type C breaker giving a disconnection time of 5 sec, the nominal voltage to earth ( Uo ) is 55v : ↔ regs 41.6
A – 0.55Ω B – 0.22Ω C – 0.28Ω D – 0.14Ω

( 30 ) The commissioning process takes place ,
A – If a fault is reported ,
B – When requested by the client ,
C – After an installation has been inspected and tested ,
D – Before an installation is inspected and tested ,

1 – ( B ) 2 – ( D ) 3 – ( C ) 4 – ( A ) 5 – ( B ) 6 – ( D ) 7 – ( A ) 8 – ( C ) 9 – ( D ) 10 – ( D ) 11 – ( A ) 12 – ( C ) 13 – ( A )
14 – ( D ) 15 – ( B ) 16 – ( C ) 17 – ( A ) 18 – ( C ) 19 – ( B ) 20 – ( A ) 21 – ( A ) 22 – ( A ) 23 – ( D ) 24 – ( B ) 25 – ( D )
26 – ( D ) 27 – ( B ) 28 – ( C ) 29 – ( C ) 30 – ( C )

 

[Sparky Bones]

AMBERLEAF - do you have any old papers/questions on 2330-203. I got 98% on H&S but only 53% on eltrical principles. I need to get this up obviously to 60% when I resit next week. Any help appreciated.

 

[amberleaf]

Portable Appliance test youself

( 1 ) Class I equipment ,
A – Has optional provision for earth ,
B – Has no provision for earth ,
C – Must be earth ,
D – Must not be earth ,

( 2 ) The most important check , when assessing the level of safety of an electrical appliance is ,
A – Earth leakage current testing ,
B – Flash testing ,
C – Visual inspection ,
D – Insulation resistance testing ,

( 3 ) A flexible cord connected to a 650w iron should be protected by a fuse rating of ,
A – 2A B – 3A C – 4A D – 5A

( 4 ) Equipment users should be competent to inspect ,
A – Sockets outlets , B – Fuses , C – Protective conductors , D – Terminal connections ,

( 5 ) Instrument test leads should comply with ,
A – BS 7671 , B – BS 3036 , C – HSE Guidance Note GS38 D – IEE Guidance Note 1 ,

( 6 ) The maximum permitted length of a 1.25mm2 extension lead fitted with a standard 13A plug should not exceed ,
A – 12m B – 15m C – 18m D – 22m

( 7 ) Equipment with an earth leakage current exceeding 3.5mA shall ,
A – Be permanently wired or supplied by plug and socket to BS 4343 ( BS-EN 6030-2 )
B – only be used in commercial situations ,
C – Have protective conductors of not less than 0.5mm2 ,
D – Have a label indicating the value of leakage current

( 8 ) When carrying out an insulation resistance test on a Class I household portable appliance to BS 3456 using the earth leakage method , the maximum acceptable value is ,
A – 0.5mA B – 0.75mA C – 0.1mA D – 1.25mA

( 9 ) Which one of the following domestic electrical appliance may be regarded as an item of stationary equipment ,
A – Bathroom heater , B – A washing machine , C – A visual display unit , D – A television set ,

( 10 ) An item of “ stationary equipment ” is defined as not having a carrying handle and mass greater than ,
A – 12kg B – 14kg C – 15kg D – 18kg ( look this one up regs , definitions p-30

( 11 ) Which one of the following would not normally be part of a user inspection ,
A – Checking the connections within the plug ,
B – Checking security of the flexible cable in its plug top ,
C – Operating to check that it works properly ,
D – Looking for signs of external damage to the equipment ,

( 12 ) Class II equipment has an identifying mark in the shape of ,
A – Square , B – Two Square, one inside the other , C – Two circles ,one inside the other D – Two circles , linked ,

( 13 ) New 13A plugs manufactured to BS 1363 will have , p-229
A – inter connecting pins ,
B – Insulated pins ,
C – Plastic earth pins ,
D – Both live pins partially insulated ,

( 14 ) When conducting an earth continuity test on IT equipment ,
A – Permission should first be sought from the equipment user ,
B – The equipment casing should be removed ,
C – All IT equipment in the area must be disconnected ,
D – The equipment must be connected to the mains ,

( 15 ) Electrical equipment for use in domestic environments will normally be fitted with a 13A plug manufactured to ,
A – BS 3036 B – BS 1362 C – BS 1363 D – BS-EN 60898

( 16 ) A 20 metre 1.5mm2 extension lead should be protected by ,
A – 3A fuse , B – 10A fuse , C – 13A fuse and RCD , D – 5A fuse and RCD ,

( 17) A flexible cord connected to equipment having an electrical rating of 800W should normally be protected by a fuse ratting of ,
A – 3A B – 5A C – 10A D – 13A

( 18) When a standard 13A plug overheats the cause would most likely be due to ,
A – A poor earth connection ,
B – Oversized conductor ,
C – A loose connection within the plug ,
D – the use of socket-outlets not to BS Standards ,

( 19) The minimum acceptable insulation resistance for Class I heating equipment rated greater than 3kW is ,
A – 30kΩ B – 0.3MΩ C – 0.5MΩ D – 500Ω

( 20) Electrical equipment should be marked with a unique serial number to help ,
A – Location , B – Testing , C – Visual inspection , D – Identification ,

( 21) Earth continuity testing may sometimes be carried out using
A – Low resistance ohmmeter ,
B – A bell set tester ,
C – An insulation tester ,
D – A loop tester ,

(22) A BS 3535 safety isolating transformer having a voltage not exceeding 50v is used to supply certain equipment complying with , A – Class O , B – Class I , C – Class II , D – Class III ,

(23) Which of the following would not normally form a part of in-service testing , A – Preliminary inspection ,
B – Loop testing ,
C – Earth continuity testing ,
D – Functional checks

(24) Electrical equipment users should be , A – Capable of inspecting equipment for obvious defects ,
B – Able to test equipment ,
C – An electrically competent person ,
D – An electrician ,

(25) The test current applied to electric equipment fitted with a 13A plug fuse , during an earth continuity test , would normally be ,
A – 25A , for at least 1 minute ,
B – 25A for a period between 5 and 20 seconds ,
C – 13A for at least 1 minute ,
D – 13A for approximately 5 seconds ,

(26) The recommended initial frequency of user checks , relevant to a children’s ride in the entrance of a store , could be ?
A – Daily B – Monthly C – Six monthly D – Annually ,

(27) Identification of electrical equipment within a duty holders’ control is required to produce ,
A – A repair schedule , B – A fault register , C – A safety check equipment label , D – An equipment register ,

(28) Which of the following does not apply when testing on a two-core cord switch ,
A – An insulation resistance test ,
B – A polarity check ,
C – An earth continuity test ,
D – A visual inspection ,

(29) Class I equipment with internal electronic components’ should be tested with a current not greater than ,
A – 15A B – 0.8A C – 400mA D – 200mA

(30) It should be confirmed , when carrying out a formal visual inspection , that electrical equipment is being operated ,
A – As laid down in the manufacturers instructions ,
B – At the correct voltage ,
C – By a skilled person ,
D – By an instructed person ,

Revision !! Class I , exposed metal work , ( 230V , ←
Revision !! Class II equipment would provide , Basic & Fault protection , ( no earth needed ,
!! Class II Electrical separation of circuits ,

 

[Sparky Bones]

Amberleaf a massive thank you.

Dont suppose you have the answers as well do you?

 

[amberleaf]

Yes I do , if you hold off I’ll give you paper 1,2 with , all Answer’s
→ ♫♫ BS 3535 ↔ Replaced by ↔ BS 3535-1 ↔ safety isolating transformer ♫ ♫
C/G will ask for BS- 3535 Replaced by BS 3535-1. paper 2 is coming out

1 - When protection against electric shock from equipment is provided using an earth wire, the equipment classification would be :
A – Class 0 B – Class I C – Class II D – Class III

2 - User checks of stationary equipment in industrial premises should be carried out :
A – Fortnightly B – Weekly C – Daily D – Before use ,

3 - When conducting insulation resistance tests on new household appliances with Class I insulation, the minimum value would be :
A – 0.25MΩ B – 0.05MΩ C – 1.0MΩ D – 2.0MΩ

4 - There is no provision for protective earthing for which one of the following equipment:
A – Class 0 B – Class I C – Class II D – Class III

5 - Equipment found to be faulty must be:
A – Labelled and withdrawn from service ,
B – Labelled and reported ,
C – Labelled , reported and withdrawn from service ,
D – Reported and withdrawn from service ,

6 - Of the following items of information, which one is not required on a test label :
A – Information on whether the equipment has passed or failed the safety tests ,
B – Date the test was carried out ,
C – Details of previous test results ,
D – The appliance number ,

7 - The scope of the EWR regarding maintenance of electrical systems extends to distribution systems up to :
A – 400kV , B – 132kV , C – 33kV , D – 11kV ,

8 - A fridge freezer is classified as:
A – No classification ,
B – A stationary appliance ,
C – Moveable equipment ,
D – A portable appliance ,

9 - The Code of Practice for In-service Inspection and Testing of Electrical Equipment does not apply to:
A – Factories , B – Offices , C – Petrel station forecourts , D – Construction site equipment ,

10 - An insulation resistance tester should be capable of:
A – Supplying a minimum voltage of 1000v dc to the load ,
B – Supplying a maximum current of 0.5A through the load ,
C – Testing the continuity of a circuit ,
D – Maintaining the test voltage when applied to the equipment insulation ,

11 - Safety isolating transformers supplying Class III equipment must conform to :
A – BS- 3526 B – BS- 5458 C – BS- 3535 D – B – BS- 5533

12 - When conducting an insulation resistance test on an electrical appliance the voltage supplied should be :
A – 500v dc B – 1000v ac C – 250v dc D – 250v ac

13 - When assessing the level of safety of an electrical appliance the most important check would be :
A – Earth fault current ,
B – Acceptable values of insulation resistance ,
C – Spot testing ,
D – Visual inspection ,

14 - Which one of the following checks should the user of an appliance be competent to undertake :
A – Visual inspection of the flexible lead and plug
B – Formal Visual inspection ,
C – Both Visual inspection and testing ,
D – Tests using a portable appliance tester ,

15 - During a formal visual inspection a check should be made to confirm that the equipment is being operated:
A – By a competent person ,
B – At the correct voltage ,
C – In accordance with manufactures instructions ,
D – By a skilled person ,

16 - To which one of the following workplace environments does the IEE Code of Practice not apply:
A – Specialised work situations , B – Hotels , C – Offices D – Shops ,

Portable Appliance test yourself test your self

17 - The legal requirement for electrical equipment to be maintained in good order is laid down in the:
A – Management of heath and safety at work regulations ,
B – Heath and safety at work act 1974 ,
C – Provision and use of work equipment regulations 1989 ,
D – Electricity at work regulations 1989 ,

18 - Instrument test leads should comply with :
A – BS-7671
B – HSE Guidance Note GS 55 ,
C – HSE Guidance Note GS 38 ,
D – BS 2001 ,

19 - The initial frequency of formal visual inspection for Class II cleaning equipment used in a school is recommended to be :
A – 1 Month B – 3 Month C – 4 Month D – 6 Month

20 - The test current applied to an electric kettle fitted with a 13A fuse during an earth continuity test. would normally be :
A – 3A for 10 seconds
B – 25A for a period between 5 and 20 seconds ,
C – 13A for at least 1 minute ,
D – 25A for 5 seconds ,

21 - Where a supply lead is tested separately, which one of the following is not applicable :
A – Earth continuity for a two-core supply cord ,
B – Visual inspection ,
C – Insulation and polarity checks ,
D – inspection and earth continuity test for a 3 core supply cord ,

22 - A continuous metal enclosure surrounding Class I equipment, would be classified as :
A – Metal cased , B – Enclosed , C – Insulation encased , D – Metal Insulated ,

23 - If a standard 13 A plug became overheated the probability is that :
A – There is a loose connection at one of the terminals ,
B – There are poor earthing connection ,
C – An incorrectly rated cartridge fuse is being used ,
D – Reversed polarity of the phase and earth conductors has occurred ,

24 - The length of a 1.25 mm² extension lead fitted with a standard 13 A plug should not be greater than:
A – 10 m B – 12 m C – 15 m D – 20 m

25 - Ohmmeters which are used to measure the resistance of an earth
continuity conductor, must produce a short-circuit current between :
A – 20mA and 500mA , B – 20mA and 200mA ,
C – 10mA and 100mA D – 2mA and 10mA ,

26 - The length of a 1.5 mm2 extension lead should not exceed :
A – 12m , B – 14m , C – 15m , D – 22m ,

27 - Equipment with an earth leakage current designed to exceed 3.5 mA shall:
A – Have protective conductors’ of not less than 0.5mm2 CSA ,
B – Only be used in offices ,
C – Have a label indicating the value of leakage current ,
D – Be permanently wired or supplied by a plug and socket to BS-4343 ( BS-EN 6030-2 ) ,

28 - Generally speaking, the safety and correct functioning of portable appliances and equipment depends on the integrity of the fixed installation. Requirements for the inspection and testing of fixed installations are given in :
A – BS-EN 60898 , B – BS-2001 , C – BS-2754 , D – BS-7671 ,

29 - Stationary equipment and appliances are defined as not having a carrying handle and have a mass exceeding:
A – 15 kg , B – 18 kg , C – 22 kg , D – 25 kg ,

30 - The first test to be applied to an item of Class I equipment is:
A – Flash test ,
B – Polarity test ,
C – Insulation resistance test D – Earth continuity test ,

Paper 1
1-C 2-C 3-B 4-A 5-C 6-A 7-A 8-B 9-B 10-D 11-A 12-B 13-D 14-A 15-C
16-C 17-D 18-C 19-B 20-D 21-A 22-D 23-B 24-A 25-B 26-A 27-D 28-C 29-D 30-A

Paper 2
1-B 2-B 3-C 4-C 5-C 6-C 7-A 8-B 9-C 10-D 11-C 12-A 13-D 14-A 15-C
16-A 17-D 18-C 19-C 20-B 21-A 22-A 23-A 24-B 25-B 26-C 27-D 28-D 29-B 30-D

bottom one is paper 2 ,

 

[Sparky Bones]

Amberleaf thanks for all that, not sure if these are what I needed.

Code is 2330-203 Application of Health and Safety and Electrical Princicples,

I think these papers are for a different component of the course, of am I wrong?

Thanks for all your help

Sparky bones

 

[amberleaf]

Protection devices, earth loop faults and disconnection time-current calculations:

1 - In the event of an earth fault in a 230V TN a.c. system, the maximum disconnection time applied to final circuits not exceeding 32A is stated in BS 7671:2008 as :
A - 0.2sec B - 0.4sec C - 2.0sec D - 5.0sec
2 - Circuit protective conductors are installed to :
A - Provide a path for short circuit currents to flow to earth ,
B - Stop exposed conductive parts becoming live ,
C - Provide a path to allow sufficient voltage to flow during an earth fault ,
D - Provide a path for sufficient current to flow , during an earth fault , to operate the protection device ,
3 - The primary function of a circuit breaker is to protect :
A - Against electric shock to people and animals ,
B - Circuit conductors from damage ,
C - Against high voltage drops during a fault ,
D - Appliances connected to the circuit ,
4 - Which one of the following is not a preferred value for a BS EN 60898 Type B circuit breaker:
A - 6A B – 16A C – 30A D – 40A
5 - What protective device would normally be found in domestic plug tops:
A - BS 1362 cartridge fuse ,
B - BS 88 fuse ,
C - BS 3036 fuse ,
D - BS 1361 cartridge fuse ,
6 - Which protective device generally has the highest fusing factor:
A - BS 3036 semi-enclosed fuse ,
B - BS 88 HBC fuse ,
C - BS 1362 cartridge fuse ,
D - BS 1361 fuse ,
7 - Discrimination occurs when:
A - Only the plug top fuse operates when a portable appliance develops a fault ,
B -The nominal current ratings of protective devices increase the nearer they get to the current using equipment ,
C -Current ratings of protective devices stay constant from consumer units to final circuits ,
D - Larger protective devices operate when a fault occurs before final circuit devices operate ,
8 - Which of the following protective devices would be used where high prospective fault currents exist :
A - BS 3036 semi-enclosed fuse ,
B - BS 88 HBC fuse ,
C - BS 1362 cartridge fuse ,
D - BS 1361 fuse ,
9 - The maximum earth fault loop impedance to ensure operation of a 30mA RCD in accordance with Regulation 411.5.3 of BS 7671:2008 for a 32A circuit supplied at 230V a.c. is :
A - 1.44Ω
B -1.84Ω
C - 500Ω
D - 1667Ω
10 - Which of the following is 'not' part of the earth fault loop impedance path within a TN-S system :
A - The phase conductor within the consumers’ installation ,
B - The supply transformer windings
C - The neutral conductor within the consumers’ installation ,
D – The supply cable sheath ,
11 - What do the symbols R1 and R2 represent in an installation:
A - Resistance of the consumers’ phase and cpc conductors ,
B - Resistor of the consumers phase and neutral conductors ,
C - Impedance of earth return and neutral star point
D - Resistance of the suppliers phase and earth conductors’ ,
12 - According to BS 7671 what minimum level of fault current will be required to operate a BS 1361 5A fuse is 0.2 seconds :
A - 30A B - 25A C -20A D - 15A
13 - Which of the following general standard RCD’s incorporates an intentional time delay :
A - Type G B - Type O C - Type S D - Type D
14 - A 13A socket-outlet which may be likely to supply portable equipment outdoors must be provided with supplementary protection by means of an rcd rated at:
A - 15mA B -30mA C - 40mA D - 150mA
15 - Motor overloads can be set slightly higher than the motor’s normal running current but, as a rule of thumb, not greater than:
A -5% B -10% C -15% D - 20%
16 - Socket outlets supplying 230 V equipment used in the garden must be protected by a residual current device because the equipment is being used:
A - Where the earth loop impedance is high ,
B - Within the equipotential zone ,
C - Where the overload tripping time exceeds 0.4 sec ,
D - Outside the equipotential zone ,
17 - The likely result of a higher than allowed earth fault loop impedance is that the:
A - Protective device will not trip if an earth fault occurs ,
B - Cable will be damage before the protective device operates in the event of a fault ,
C - Current rating of the protective device must be reduced ,
D - Protective device will not trip in the event of short-circuit ,

18 - The maximum disconnection time for a TN a.c. circuit, not exceeding 32A, when supplied at 400V is stated in BS 7671:2008 as:
A – 0.8sec B – 0.4sec C – 0.2sec D – 0.1sec
19 - What is the fault current required for a disconnection time of 0.1 second for a BS EN 60898 Type B 6A protection device as stated in BS 7671:
A -6A B – 30A C – 100A D – 125A
20 - If the protective device quoted in question 19 above was subjected to a fault current of 20A, the time taken for it to disconnect the supply would be:
A – 10s B - 20s C – 30s D – 40s
21 - What is the maximum value of ‘earth fault loop impedance’ allowed in a circuit protected by a 40A BS 88 (gG) protective device with a 5 second disconnection time, as stated in BS 7671:2008:
A – 0.96Ω B – 1.15Ω C – 1.04Ω D – 1.44Ω
22 - A ‘rule of thumb’ value of 0.75 used to be applied to the BS 7671 maximum earth fault loop impedance values. What is the current value as stated in Appendix 14 of :
A - 0.5 B - 0.75 C - 0.8 D -1.45
23 - In the equation S = √I2 x t / k what does the symbol 'I' signify:
A - Circuit design current ,
B - Circuit fault current ,
C - Normal running current ,
D - Current rating of the protective device ,
24 - In the equation in question 23 above what does the symbol 'S' signify:
A - Time taken for the protection device to operate ,
B - Size of the phase conductor ,
C - Size of the cpc ,
D - Required minimum size of the cpc ,
25 - Isolation at the source of a 3-phase 4-wire installation and forming part of a TN system may be provided by a:
A – Three pole and neutral switch ,
B – Single pole manually operated switch ,
C - Three pole manually operated switch ,
D – Four pole manually operated switch ,
26 - The earth loop impedance of a circuit can be calculated by the formula:
A – Zs = Ze – R1 – R2 , B - Zs = R1 + R1 – Ze , C - Zs = Ze / R1 + R2 D - Zs = Ze + ( R1 + R2 ) ,
27 - When subjected to a fault current of 50A which of the following protection devices will operate first according to BS 7671:
A - 20A BS-1361 fuse , B - 20A BS-3036 fuse , C - 20A BS-88 fuse , D - BS-EN 60898 type B circuit breaker ,
28 - A socket circuit is protected by a 30A BS 1361 fuse with a disconnection time of 0.4s.The circuit has a Ze of 0.8 Ω. What will be the maximum value of R1 + R2 in order to meet the requirements of BS 7671:2008:
A - 0.4Ω
B - 0.35Ω
C - 1.6Ω
D - 1.85Ω
29 - A short-circuit current is defined as an overcurrent occurring in a circuit when a:
A – Heavy overload occurs ,
B - Fuse blows ,
C - Fault of negligible impedance occurs between phase and neutral conductors ,
D - Fault of negligible impedance occurs between phase and protective conductors ,
30 - Which of the following offers protection against both earth leakage current and overload :
A - BS-88
B - MCBs
C - RCDs
D – RCBOs

Ps , don’t thick you’ll get away with using just RCDs , RCBOs , MCBs , and that’s you of the hook , C/G will ask about
↔ BS-88 ↔ BS 1361 , this will be your overload at mains supply , at Domestic as a rule 100A ,

For Gods sake , don’t be scared to ask your Tutors’ , he must give it to you in 3 Forms , don’t be scared to ask for it in THE “ IDOT PROOF “ way !!!!!!!! I did and so did half my class mates when I was in Collage many years ago , ps you ask how many Electricians did this and watch there hands go up , I wonder ? , Hang on in there you’ll can do it

1- 0.4s 2 – D 3 – B – C 5 – A 6 – A 7 – A 8 – B 9 – D 10 – C 11 – A 12 – B 13 – C 14 – B 15 – D

16 – D 17 – B 18 – C 19 – B 20 – C 21 – C 22 – C 23 – B 24 – D 25 – C 26 – D 27 – B 28 – B

29 – C 30 – D

Sorry amberleaf is going off line for some weeks ,
I am studying to , ps I will be back soon 27 may 2009
Will some more stuff , “ please I have 3 half fingers left “

PS can you thank the “ BIG BOSS “ for keeping this space opened ,
If it was not for “ Dan “ , Please say thank you Dan ,
IF this is helpful then ive done my small bit , Amberleaf

The Test Specifications for this Qualification , 2392-10
Duration 100 mins
No of Questions : 50
Approximate
Unit title Items percentage %
1 , Preparation for Inspection & Testing 8 16%
2 , Inspection 6 12%
3 , Testing 36 72%


Total 50 100%

PS , Remember Read up Big Time on ( TT Systems ) , as well ♫ ♫ ♫ ♫

 

[amberleaf]

● Current Carrying Capacity for PVC Sheathed Flat Cables With CPC ●

● A Single T & E Cable above Plasterboard Ceiling Covered by Thermal Insulation “ NOT ” Exceeding 100mm Thick :
1.0mm - 13A 4.0mm – 27A 16.0mm – 57A
1.5mm - 16A 6.0mm – 34A
2,5mm - 21A 10.0mm – 45A

● A Single T & E Cable above Plasterboard Ceiling Covered by Thermal Insulation “ EXCEEDING ” 100mm Thick :
1.0mm – 10.5A 4.0mm – 22A 16.0mm – 46A
1.5mm – 13A 6.0mm – 27A
2.5mm – 17A 10.0mm – 36A

● A Single T & E Cable in a Stud Wall with Thermal Insulation with the Cable “ TOUCHING ” the Inner Surface of the Wall :
1.0mm – 13A 4.0mm – 27A 16.0mm – 63A
1.5mm – 16A 6.0mm – 35A
2.5mm – 21A 10.0mm – 47A

● A Single T & E Cable in a Stud Wall with Thermal Insulation with the Cable “NOT “ Touching the Inner Surface of the Wall
1.0mm – 8A 4.0mm – 17.5A 16.0mm – 42.5A
1.5mm – 10A 6.0mm – 23.5A
2.5mm – 13.5A 10.0mm – 32A

● A Single T & E Cable Clipped Direct
1.0mm – 16A 4.0mm – 37A 16.mm – 85A
1.5mm – 20A 6.0mm – 47A
2.5mm – 27A 10.0mm – 64A

● A Single T & E Cable Enclosed in Conduit in an Insulated Wall :
1.0mm – 11.5A 4.0mm – 26A 16.mm – 57A
1.5mm – 14.5A 6.0mm – 32A
2.5mm – 20A 10.0mm – 44A
p - 282
● A Single T & E Cable Enclosed in Surface Mounted Plastic Conduit or Mini Trunking :
1.0mm – 13A 4.0mm – 30A 16.mm – 69A
1.5mm – 16.5A 6.0mm – 38A
2.5mm – 23A 10.0mm – 52A
p - 276
● Meter Tails ↔ In Conduit in Thermally Insulating wall - Ref - Method ( A ) ←
16mm = 61Amps , 25mm = 80Amps

● In Conduit on a Wall or Trunking - Ref - Method ( B ) ←
16mm = 76Amps , 25mm = 101Amps

● Clipped Direct Ref - Method ( C ) ←
16mm = 87Amps , 25mm = 114Amps p – 274

● The Values given in the above Tables must be “ Multiplied “ by the Following Values Depending on
Number of Cables Grouped Together :
2 Cables – 0.80 3 Cables – 0.70 4 Cables – 0.65 5 Cables – 0.60 6 Cables – 0.57

● The Formula for Calculating the Group Rating Factor for Different sized Cables Group Together is :
1 / the Square Root of the Number of Circuits in the Group ( 2.3.3.1 )
For more Information see p – 268

● BS-88-2.2 & BS-88-6 gG Fuses ● ● 5A 0.4s = 10.45 , 5s = 16.4 ●
5A - N/A 6A N/A
6A , 0.4s = 8.52 , 5s = 13.5 10A N/A
10A , 0.4s = 5.11 , 5s = 7.42 15A 0.4s = 3.28 , 5s = 5.0
15A - N/A 16A N/A
16A 0.4s = 2.70 5s = 4.18 20A 0.4s = 1.7 , 5s = 2.8
20A 0.4s = 1.77 5s = 2.91 25A N/A
25A 0.4s = 1.44 5s = 2.3 30A 0.4s = 1.15 , 5s = 1.84
30A - N/A 32A N/A
32A 0.4s = 1.04 5s = 1.84 40A N/A
40A 0.4s = N/A 5s = 1.35 45A 0.4 = N/A , 5s = 0.96
45A - N/A 50A N/A
50A 0.4s = N/A 5s = 1.04 60A 0.4s = N/A , 5s = 0.7
60A - N/A 63A N/A
63A 0.4s = N/A 5s = 0.82 80A 0.4s = N/A , 5s = 0.5
80A 0.4s = N/A 5s = 0.57 100A 0.4s = N/A , 5s = 0.36
100A 0.4s = N/A 5s = 0.42 125A N/A
125A 0.4s = N/A 5s = 0.33 160A N/A
160A 0.4s = N/A 5s = 0.25 200A N/A
200A 0.4s = N/A 5s = 0.19

● BS-3036 Fuses ● ● BS-1362 Fuses ●
5A 0.4s = 9.58 , 5s = 17.7 3A 0.4s = 16.4 , 5s = 23.2
6A N/A 13A 0.4s = 2.42 , 5s = 3.83
10A N/A
15A 0.4s = 2.55 , 5s = 5.35
16A N/A
20A 04s = 1.77 , 5s = 3.83
25A N/A
30A 0.4s = 1.09 , 5s = 2.64
32A N/A
40A N/A
45A 0.4s = N/A 5s = 1.59
50A N/A
60A 0.4s = N/A 5s = 1.12
63A N/A
80A N/A
100A 0.4s = N/A 5s = 0.53
125A N/A
160A N/A
200A N/A

MCBs to BS-EN 60898 & RCBOs to BS-EN 61009-1 for Disconnection times of 0.4 & 5 seconds
3A type B 15.33 , type C N/A type D N/A
5A type B N/A , type C N/A type D N/A
6A type B 7.67 , type C 3.83 , type D 1.92
10A type B 4.6 , type C 2.3 , type D 1.15
15A type B N/A type C N/A type D N/A
16A type B 2.87 , type C 1.44 , type D 0.72
20A type B 2.3 , type C 1.15 , type D 0.57
25A type B 1.84 , type C 0.92 , type D 0.46
30A type B N/A type C N/A type D N/A
32A type B 1.44 , type C 0.72 type D 0.36
40A type B 1.15 , type C 0.57 type D 0.29
45A type B N/A type C N/A type D N/A
50A type B 0.92 type C 0.46 type D 0.23
60A type B N/A
63A type B 0.73 , type C 0.36 type D 0.18
80A type B 0.57 type C 0.29 type D 0.14
100A type B 0.46 , type C 0.23 type D 0.11
125A type B 0.37 type C 0.18 type D 0.09

● BS-1362 Fuses 3A 0.4s = 16.4 , 5s = 23.2 13A 0.4s = 2.42 , 5s = 3.83

● Maximum Ze & Zs Values ●
● BS-88-2.2 & BS-88-6 gG Fuses ●
5A - N/A
6A , 0.4s = 8.52 , 5s = 13.5
10A , 0.4s = 5.11 , 5s = 7.42
15A - N/A
16A 0.4s = 2.70 5s = 4.18
20A 0.4s = 1.77 5s = 2.91
25A 0.4s = 1.44 5s = 2.3
30A - N/A
32A 0.4s = 1.04 5s = 1.84
40A 0.4s = N/A 5s = 1.35
45A - N/A
50A 0.4s = N/A 5s = 1.04
60A - N/A
63A 0.4s = N/A 5s = 0.82
80A 0.4s = N/A 5s = 0.57
100A 0.4s = N/A 5s = 0.42
200A 0.4s = N/A 5s = 0.19

● BS-1361 Fuses ●
5A 0.4s = 10.45 , 5s = 16.4
6A N/A 10A N/A
15A 0.4s = 3.28 , 5s = 5.0
16A N/A
20A 0.4s = 1.7 , 5s = 2.8
25A N/A
30A 0.4s = 1.15 , 5s = 1.84 32A N/A
40A N/A 45A 0.4 = N/A , 5s = 0.96 50A N/A
60A 0.4s = N/A , 5s = 0.7 63A N/A
80A 0.4s = N/A , 5s = 0.5
100A 0.4s = N/A , 5s = 0.36
125A N/A
160A N/A
200A N/A

 

[amberleaf]

Some ( PSCC ) “ Prospective Short Circuit Current “ Instruments give the Measured Value in Ω Ohms, not ( kA ) ↔ PSCC Calculation , Ohms –Law

Measured Value is 0.08 Ω
Uo in this Calculation ( 230V )
230
PSCC = -- ÷ -- = 2875 Amp ↔ ( 6000 kA ) !!! PSCC
0.08

It is Important that the Short Circuit Capacity of any Protective Device fitted Exceeds the Maximum Current that could
Flow at this Point at which they are fitted ,
( PFC ) Regs : 432.3 will be Satisfied
O.S.G. 7.4 P 57

Circuit Breakers to BS-60898 & RCBOs BS-61009 Show two Values

Ics ≥ 3 Ics 3 above Instantaneous Tripping
Icn ≥ 6000kA 5 times Magnetic Settings 5 x 32 = 160A


RCBOs to BS-EN 61009-1 type B 5 times magnetic settings ( 5 x 6A = 30A p – 249
Ics ≥ 3 Ics 3 above Instantaneous Tripping

RCBOs to BS-EN 61009-1 type C 10 times magnetic settings ( 10 x 10A = 100A p – 250

RCBOs to BS-EN 61009-1 type D 20 times magnetic settings ( 20 x 6A = 120A p – 251
MCBs BS-EN 60898 6A ÷ 230 = 0.02s
6A ÷ 120 = 0.05s Ief 10 In , earth fault current of not less than 640A
32A ÷ 230 = 0.1s
32A ÷ 640 = 0.05s Ief