Pat Testing Stuff : 2009/10

[amberleaf]

Re: Section - 301- Questions - Testing ,

● Every time an item of Electrical Equipment is Used . it is Effectively “ Checked “ ( in Relation to Pat Testing . this is Known as “ User Check “ )

The 2377 Level 3 Certificate Illustrates that a Person Sound Working Knowledge of The Content & Application of the Relevant Parts of the Code of Practice that Relate to Equipment . Construction . Inspection . Combined Inspection/Testing & Recording of Test Results.

You must be Competent and . in an Employer Situation . the Employer must take Responsibility for that Competence by Providing Adequate Information & Training

The Person Inspecting & Testing Appliances must have an Understanding of the Modes of Electrical . Mechanical or Thermal Damage to Electrical Equipment & Appliances and their Flexes which may be Encountered in any Environment and to Know Typical Fault Indicators to look for .

He must also have an Understanding of the Principles of Fuse Protection & Correct Fuse Ratings for Various Wattages of Appliances

His Knowledge must also include the Identification of Equipment and Appliance Classes to Determine the Relevant Test Procedures Required and they should be Able to Recommend the Frequency of Inspection & Testing Required .

The Person Appointed for Testing Appliances must also be Familiar with the Test Equipment Used and in Particular their Limitations & Restrictions so as to Achieve Repeatable Results without Damaging the Appliance through Testing .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

What is a Portable Appliance ??

Generally . Equipment which is Connected to an Electrical Supply by Means of a Lead ( Cable ) & a Removable Mains Plug and which is Normally Moved around would be Classed as a Portable Appliance .

This would Include items such as :- Kettles – Class 1 26A : Vacuum Cleaners : Heaters : Fans : Desk Lamps : …… Etc .

However ,
Although the Term Used for Testing is “ Portable Appliance Testing “ it is Not Only your Truly “ Portable Appliances which Require Inspection & Testing it would also Include Electrical Equipment that could be Moved ,

This would Include Items such as : Photocopiers : Washing Machines : Desktop Computers : …….. Etc .

The Reason why Pat is Carried Out is to Reduce the Risk of Electrical Shock & Fire Caused by Faulty Appliances so Different Types or Modes of Usage of an Appliance will Influence the Level of Risk .

The IEE Code of Practice gives Guidance on the Various Equipment Types . the Guide also Recommends how Often you should Re-Inspect Equipment according to the Type of Environment it is being Used in or Regards to the Rigors of Usage .

Ex : an Electrical Power Tool which is Thrown around on a Building Site & could also be Exposed to Dirty . Wet Conditions would Require more Frequent Inspection & Testing than say a Computer Monitor . which sits Undisturbed on an Office Desk .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

Thank You / breakerman
Poor Jason/s When I first came On the Forum I bet I Sounded like A Deranged Scotsman . Ye

Definitions of Equipment / Appliances’ :

Part 5 of the Code of Practice [ 3rd Ed p/27 ] now Break down Electrical Equipment into [►Nine Types . -&-s ]
Portable Appliances [ CoP 5.1 p/27 ]
An Appliance of Less than ( 18kg ) in Mass that is Intended to be Moved whilst in Operation or an Appliance which can Easily be Moved from One Place to Another . e.g. Toaster . Food Mixer . Kettle : { A Kettle is a Portable Appliance } PS. The Wording .

Movable ( or Transportable ) Equipment [ CoP 5.2 p/27 ]
This Equipment is Either :-
-&-s : 18kg or Less in Mass and Not Fixed ( e.g. an Electric Air Compressor ) or
Equipment with Wheels . Castors . or other Means to Facilitate Movement by the Operator as Required to Perform its Intended Use .( Air Conditioning Unit . Tumble Dryer )

Hand Held Equipment or Appliances [ CoP 5.3 p/28 ]
This is Portable Equipment Intended to be Hand Held during Normal Use . Hair/Dryer . Hand/Power Tool’s . Soldering Iron . Hedge Trimmer .
Example . 3 / ** Iron – ** Electric Drill – Electric Chainsaw . -&-s

Stationary Equipment or Appliances [ CoP 5.4 p/29 ] This Equipment has a Mass Exceeding 18kg and is Not Provided with a Carrying Handle [ The Wording ]
Refrigerator / Fridge . Washing Machine . Dishwasher . [ A Washing Machine is a Stationary Appliance -&-s ] “ Not Fixed “ The Wording !!

Fixed Equipment or Appliances [ CoP 5.5 p/29 ]
An Item of Fixed Equipment or a Fixed Appliance that is Fastened to a Support or Otherwise Secured in a Specified Location .
Bathroom Heater : Hand Dryer : Central Heating Boiler : Hand Dryer : Fixed Air Conditioning Unit :Electric Towel Rail . Immersion Heater : Luminaire :
-&-s . Hand Dryers / Air Conditioning Units .

Appliances or Equipment for Building in [ CoP 5.6 p/29 ]
This is Defined as an Appliance or Equipment intended to be Installed in a Prepared Recess such as a Cupboard or Similar . Generally Speaking . this Type of Equipment does not have an Enclosure on all SIDES . Ex . Built in Electric Cooker

Information Technology Equipment [ CoP 5.7 p/29 ]
Information Technology Equipment includes Electrical Business Equipment such as Computers and Mains Powered Telecommunications Equipment . and Other Electronic Equipment . such as Personal Computers . Scanners . Printers . Photocopiers . Fax Machines & Monitors to name but a Few .
Mail Processing Machines : Electric Plotters .Trimmers . VDUs . Data Terminal Equipment . Typewriters .Telephones . Printers . / Power Packs .

• Extension Leads & RCD Extension Leads [ CoP 5.8 p/30 ]
An Extension Lead would be Needed where an Item of Electrical Equipment needs to be Used in an Area where a Convenient Socket Outlet is Not Available . An RCD Extension Lead is Simply an Extension Lead that also Includes an RCD . Max : 13A – RCD . When Testing Must be Unwound . Why ?? Heat / Fire . Watch for this One . -&-s

• Multiway Adaptors & RCD Adaptors [ CoP 5.9 p/30 ]
Multiway Adaptors & Cube Adaptors are Used when Used when Socket Outlets Available .

• RCD Adaptors are Used to Provide Protection for Person(s) using Portable Equipment Particularly for Person(s) using Portable Equipment Outdoors .

All of the Above will Require Consideration when Establishing a Pat Inventory .

( When Testing Extension Leads . Furthest Socket . ) But Check them all Out ) Good Practice )

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

Classes of Appliances :
There are ( 5 ) Classes Of Equipment .

( 1 ) Class 0 [ Banned 1975 ]
( 2 ) Class 01 [ 2-Core Cable No Earth ]
( 3 ) Class 1
( 4 ) Class 11 [ Square within a Square to Indicate this Double Insulation Design ]
( 5 ) Class 111 [ Less than 50V ] Equipment to be Required to be Supplied from a Safety Isolating Transformer / BS-EN 60742 or BS-EN 61558-2-6 .
Basic Definitions can be found in Part 2 . p/53

Class 01 Equipment is Specialist Equipment and Not Common Use !!! Trip Up One -&-s

● Class 11 : Equipment is Often Referred to as “ Double Insulated “ ( Although this is Not Strictly True ) and its Design . Manufacture & Materials Used made it Virtually Impossible for the Unintended Components of the Appliance to become Live .
● Class 11 : Equipment Basically means that you will be Unable to come into Contact with Live Conductors as the Equipment Prevents this through its high Level of Insulation .

Many People Confuse the Definition of Class 11 as “ Two Levels of Insulation “ This is Not Necessarily True .
● Class 11 Piece of Equipment that has Only One Layer of Substantial Reinforced Insulation . p/18

The Code of Practice Split into Three Main Parts .
There are some Important Pieces of Information in Part 1 that you are Likely to find Questions on in your 2377 exam
You would do well to Familiarize yourself with Sections [ 3.1 to 4 of the CoP ] and are Likely to Encounter Several Questions on this Section

● What Type of Equipment does [ PUWER ] Apply to [ CoP 3.1.3 p/21 – 22 ] -&-s
● What Duties do Employees have whilst at work [ CoP 3.3 p/23 ] -&-s
● Why is it Extremely Important that the Fixed Installation is not Faulty [ CoP 4.0 p/25 ] -&-s . 3rd Edition These not a 4.0 under 4.1 p/25

Re-read Section 5 of the CoP which Details & Illustrates the Nine Types of Electrical Equipment . p/27

The 3rd Edition CoP . Provides a Useful “ Introduction “ Section which Summarizes the Reason for Maintaining Electrical Equipment . it gives a Concise Summary of who the Responsibilities Lie with & What needs to be Done to Comply with the Relevant Regulations .

Take a Minute to Read the Introduction on Pages 1.4 CoP. p/8

The Electrical Tests .
The Electrical Tests are now Dealt with in Section 6 [ p/31 – 32 ] 1 )

3rd Edition . There are Four Recognised Test Situations . which come Under the General Heading of 6.1 Testing Throughout the Life of Equipment
1 ) 6.2 Manufacturer’s Type Testing . p/31
2 ) 6.3 Manufacturer’s Production Testing . p/31
3 ) 6.5 Testing After Repair . p/32
4 ) 7.1 In-Service Inspection & Testing . p/33

Manufacturer’s Type Testing .
This is Carried Out by the Manufacturer’s or Test House to Assess Compliance with British or European Standards .
This Type of Test or Tests Usually Results in the Destruction of the Appliance .

Manufacturer’s Production Testing .
This Test Similar to the Manufacturer’s Type Test above in the Fact that it Checks Compliance with Particular Standards . however the Test or Tests will be No-Destructive . this Test can be Carried Out on “ New “ Equipment Following Refurbishment or Repair .

In-Service Inspection & Testing .
The One that Concerns Us !! This is the Testing of Appliances in Everyday Use . Lovingly Known as Pat Testing : Split into Three Categories of Testing .
Frequency of Testing Section .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

New Equipment :

There is No Specific Stated Requirement to Carry Out Tests of Formal Visual Inspections on New Equipment . it is Prudent to Consider that much Damage can be Caused during Storage and Transit of “ New “ Equipment and it is Recommended that Inspection & Testing be Carried Out before it put to First Use .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

This Stuff is for CoP : ( Code of Practice ) Pat Testing . PS this Stuff is up to Date 2009/10
Remember that -&-s can ask you out of Q/As Bank 250◄ . in an Exam

Breakeman . Learning Curve ! PS I will get Back to you . CoP :- Insulation Test . [ p/81 3rd Edition ] its . the Wording !!!!!!!!! 17th Edition :- Insulation Résistance .

The One’s am Down Loading are Ones that will Catch you Out . -&-s . CoP . Put some are the same Principle’s . W.G.B.T.Y. Doing A Quick Job . back about 2/3 .Please do not Down load any more stuff . I will get back to you .Amber [ Jason/Phil will do Hand Stands ]

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

Functional Checks : CoP .

This Final Test is Simply a Check to Ensure that the Item is Functioning Correctly [ Last ] -&-s

When Using a Pat Tester . there is Usually a Facility for Conducting a Load Test which Measures the Power Consumption of the Item when it is Switched on . This is a Useful Test to Identify if an Item is Working to it’s Expected or Full Capacity . This is Particularly Useful for Heating Appliances . for Example . a 1kW Reading on a 2kW Heater may Suggest an Element with an Open Circuit .

Note : ( Tick ) indicates Pass/Satisfactory . ( X ) indicates Fail/Unsatisfactory ( N/A ) indicates not applicable & ( N/C ) not checked : CoP .

Records should Include :
• A Register of all Equipment .
• A Record of Formal Visual Inspections & Tests.
• A Repair Register .
• A Register of Faulty Equipment .

Records should be Maintained throughout the working Life of the Relevant Appliance . along with a Record of its Acquisition and Final Disposal . -&-s

♦ Employees : should not be Allowed to bring Electrical Equipment/Appliance from home into the Workplace .
If they Do . such Equipment/Appliance must be Included in the Inspection/Test Regime before being put to Use at Work & Appropriate Records Maintained .

♦ Once an Electrical Equipment/Appliance is Connected to your System . you are “ Legally Responsible“ to Ensure it is Safe .

Equipment Labels :- if the Appliance has Passed or Failed
On Successful Completion of Tests a Label should be Attached to the Appliance Indicating : p/118

Pass / Green . Safety Check .
- Date of Check .
- Initials .
- Appliance No . [ Appliance Unique Reference Number ]
- Next Test before .

Fail/Red . Safety Check . [ Danger Do Not Use ] ( X )
- Date of Check .
- Initials .
- Appliance No .

Without Adequate Records .” Duty Holders “ Cannot be Certain that the Inspection & Testing has Actually been Carried Out and would not have Documentary Evidence to Prove it . if an Accident should Occur . then Records of Test Results would be Used as “ Evidence in an Investigation and could Prove that you had Done all “ as far as is Reasonably Practical “ to Prevent Danger .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

Protective Conductor/Touch Current Method :- CoP .

This is an Additional or Complementary Test to the Insulation Test for Instances where the Insulation Test Cannot be Performed or Gives Suspect Results . The Exact Method of Carrying out this Test is a Little Vague in the CoP. & this Alternative Test May Only be Available on the More Expensive & Advanced Pat Testers .

So Rather than Spend Time on this Subject that may Never be Required Under Normal Circumstances .
It would be more Productive to Read Through Section 15.6 – P/76 & Note where Table 15.3
Should a Question Arise on this Section in the 2377 Exam .


-&-s Q/As [ The Protective Conductor Current or Touch Current be Measured within ( 5s ) after the Application of the Test Voltage . the Supply Voltage ↔ " Hint " . & should Not Exceed the Values in Table 15.3 ]

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

A Test for Polarity is Only Required to be Carried Out On Detachable Power Supply Flex and ? [ Extension Leads ]
a) Class 11 hand-Held Appliances .
b) Class 1 hand-Held Appliances .
c) Extension Leads . ↔ Correct Answer .
d) Non-Detachable Flexible Cords

Visual Inspection : p/78
Class 1 / Earth Continuity . Polarity & Insulation .
Class 11 / Polarity & Insulation . [ No Earth ]

3rd Ed . The Reason that the Cord Set is Inspected & Tested Separately from the Appliance is that the Cord Set could be Used During the Course of the Next Period to Supply a Different Appliance .

Example :- if the Cord Set was 2-Core and , During the Year , Was Inadvertently Used to Supply a Class 1 Appliance , the Appliance would be Unearthed and Present a Risk of Electric Shock .

 

[amberleaf]

Re: Section - 301- Questions - Testing ,

i) Class of Equipment ?? ( 1 ) ( 11 )
ii) Mass of Equipment ( kg ) ??? ▼
Portable Appliance’s / p-27 Not More than 18kg ) ▼
Movable Equipment ( Sometimes called Transportable ) 18kg Or Less & Not Fixed ) ▼
Stationary Equipment or Appliance’s ) Stationary Appliance is Equipment that has a Mass Exceeding 18kg

Ps . I Don’t Known Y . This Q/As Pat Testing Came Up . ?? [ Hospitals’ ? Telecommunication’s ? ]

in Order to Reduce the Possibility of Electric Shock through Contact with Live Parts . The Aperture of any Item of Electric Equipment must ?
a) Be Locked at all Times .
b) Only be Opened by the Designated Keyholder
c) Comply with the Requirements’ of BS-EN 20501
d) Meet Test Finger & Test Pin Requirement’s ↔ Correct Answer .

Protection from Hazards :

Protection against Electric Shock & Energy Hazards !!
i) Protection in Operator Access Areas :- [ Adequate Protection by Enclosure . There is No Access to Hazardous Parts ] ( P )
ii) Test by Inspection:- [ Protection is Established by Insulation Materials ] ( P )
iii) Test with Test Finger :- [ No Access to above Mentioned Parts ] ( P )
iv) Test with Test Pin ] No Access to Above Mentioned Parts ] ( P )

Overcurrent and Earth Fault Protection in Primary Circuit’s ( ADS ) RCDs .
Basic Requirements :- [ Earth Fault Protection is to be Provided by Building Installation ] ( P )

Equipment with Earth Leakage Current Exceeding 3.5mA :- [ Cross-Sectional Area ( mm2 ) of Internal Protective Earthing Conductor ]
Warning Label :-


Dad’s Keep in Mind !!! [ Just a Wake Up Call ] Christmas is Just around the Conner ◄◄

“ As with all Electrical Products . Precautions should be Observed during Handling & Use to Prevent Electrical Shock . The Child should be Very Carful while Handling the Power Supply (Adapter(s) ) in Particular Plugging the Power Supply into the Socket-Outlet “ . Etc . DS ….
[ Would a Child Recognises . Damaged/Broken Parts ]