Discuss Stuck on L3 section of work relating to fault diagnosis and rectification in the The Welcome Forum area at ElectriciansForums.net

Reaction score
4
Good evening,

Got stuck on a section of my written work which we have been instructed to complete but as I haven't experienced these scenarios yet am struggling a little bit and haven't had much luck researching through notes/ handouts and guidance notes. People on here have been very helpful thus far , so once again just wanted to pick your brains... Many thanks for any input. (will be much appreciated) :)

1. Describe, for this installation, two types of faults most likely to occur in each of the following.

a) Wiring systems in the loft space above the first floor.

(could this be insulation of cables could get damaged if incorrect cable path is chosen i.e if caught between boarding and would another one be to make sure the loft insulation it's self doesn't interfere with the cable as this can affect it can't it?)

b) Equipment and accessories in the intake room.

(so would this be faults at distribution board(s) ?)

2. Describe, for each of the following symptoms, the most likely electrical fault.

a) A fault has occurred on a lighting circuit in the glass house area, so that when it is switched on the RCBO protecting the circuit operates.

(could this be something to do with earth?)

b) The outside lights above the entrance only turn off when the protective device is turned off.

(could this be something to do with the wiring of the circuit? wiring fault)

Sorry to harp on, just wanted some confirmation and any knowledge from anyone that may be able to help .

Kind regards
C
 
a) Wiring systems in the loft space above the first floor.

(could this be insulation of cables could get damaged if incorrect cable path is chosen i.e if caught between boarding and would another one be to make sure the loft insulation it's self doesn't interfere with the cable as this can affect it can't it?)
insulation causing overheating, rats chewing cable. trapped cable under a board.

b) Equipment and accessories in the intake room.

(so would this be faults at distribution board(s) ?)various faults. loose connections, missing main earthing and bonding condutors etc. conductors

2. Describe, for each of the following symptoms, the most likely electrical fault.

a) A fault has occurred on a lighting circuit in the glass house area, so that when it is switched on the RCBO protecting the circuit operates. this could be a L-E fault causing the RCD part of the device to operate, or a short/overload causing the MCB to operate

(could this be something to do with earth?)

b) The outside lights above the entrance only turn off when the protective device is turned off. switch contacts welded together

(could this be something to do with the wiring of the circuit? wiring fault)

Sorry to harp on, just wanted some confirmation and any knowledge from anyone that may be able to help .

my rthoughts in red.
 
a) Wiring systems in the loft space above the first floor.

(could this be insulation of cables could get damaged if incorrect cable path is chosen i.e if caught between boarding and would another one be to make sure the loft insulation it's self doesn't interfere with the cable as this can affect it can't it?)
insulation causing overheating, rats chewing cable. trapped cable under a board.

b) Equipment and accessories in the intake room.

(so would this be faults at distribution board(s) ?)various faults. loose connections, missing main earthing and bonding condutors etc. conductors

2. Describe, for each of the following symptoms, the most likely electrical fault.

a) A fault has occurred on a lighting circuit in the glass house area, so that when it is switched on the RCBO protecting the circuit operates. this could be a L-E fault causing the RCD part of the device to operate, or a short/overload causing the MCB to operate

(could this be something to do with earth?)

b) The outside lights above the entrance only turn off when the protective device is turned off. switch contacts welded together

(could this be something to do with the wiring of the circuit? wiring fault)

Sorry to harp on, just wanted some confirmation and any knowledge from anyone that may be able to help .

my rthoughts in red.

Once again, thanks telectrix. Very helpful. I was on the right track then but didn't think of rats chewing cables ... that's a good one! (hopefully I don't come across that later on though) haha, Have a nice evening!
 
a) A fault has occurred on a lighting circuit in the glass house area, so that when it is switched on the RCBO protecting the circuit operates.

Agree Tel answer, and since it's in the glass house, there is likely water involved in creating low IR etc :)
 
IMG_4574.JPG

It does and it always will - little cutie pies!
 

Reply to Stuck on L3 section of work relating to fault diagnosis and rectification in the The Welcome Forum area at ElectriciansForums.net

Similar Threads

Please advise what I should test / check next. My usual qualified electrician who did all of the work here is in Ireland for 4 weeks and not...
Replies
45
Views
3K
Hi all. Have an issue i'd love some advice on if anyone would be so kind. Will try to be brief. Thank you!! So, have an intermittent RCD trip at...
Replies
43
Views
3K
Hi, A lot about this fault confused me to be honest. So customer complained the doorbell was not working as intended. By that I mean the chime...
Replies
2
Views
670
Hi all, New to the forum. I have been asked to look at this for one of our guys who's had an issue onsite after some electrical works had been...
Replies
4
Views
702
Hi everyone Ive just had an electrical condition report conducted on a mixed-use property, and I am extremely surprised that after the last report...
Replies
11
Views
2K

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock