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Discuss Broken CPC on Lighting Circuit in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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First time posting so hope this is correct place? Been checking out a Customers Premises and all is good apart from 1 lighting circuit that feeds a bedroom and office. A CPC has been run but has been damaged/broken/cut somewhere en route to first light switch. (proved by using wander lead). Subsequent CPC to next switch shows good continuity. Be interested to know peoples thoughts?
1. All fixings are plastic so ok to leave? - Although i know this is not an option I'm sure
2. Try and get a new feed from other lighting circuit?
3. Other options that people have done in same situation?
Cheers
 
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Spoon

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Welcome to the forum mate.
IMO option 1 is not an option. If people see an earth to a switch they will think functional and it's suitable to change the switch to a class 1.
I'd fix it.
 

davesparks

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1. All fixings are plastic so ok to leave? - Although i know this is not an option I'm sure
2. Try and get a new feed from other lighting circuit?
3. Other options that people have done in same situation?
1. No, it doesn't comply.
2. No, why would you combine this circuit into another lighting circuit.
3. Find the fault and fix it, or replace the cable with the fault.
 
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1. No, it doesn't comply.
2. No, why would you combine this circuit into another lighting circuit.
3. Find the fault and fix it, or replace the cable with the fault.

What's wrong with extending the end of another existing lighting circuit to join this one with a new LNE ?
This would be easier for a new cable run back to the CU. The old cable would then be disconnected.
 

Spoon

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A CPC has been run but has been damaged/broken/cut somewhere en route to first light switch.
What's wrong with extending the end of another existing lighting circuit to join this one with a new LNE ?
This would be easier for a new cable run back to the CU. The old cable would then be disconnected.
I thought the broke CPC was 'en route to first light switch' as in your first post?
Isn't this just a switched live or is it wired up different?
 
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I thought the broke CPC was 'en route to first light switch' as in your first post?
Isn't this just a switched live or is it wired up different?

Broken CPC is "en route to first light switch" but it is looped at the Switch, therefore feed from CU starts at this switch. My plan would be to sack of this cable completely and run a new feed from an existing Lighting loop.
I guess just like would you'd do if you are adding extra lights to an existing circuit.
 

DPG

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Can't you take the cpc from another point on the same lighting circuit?
 

telectrix

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Can't you take the cpc from another point on the same lighting circuit?
not if the break is between CU and 1st switch. replace cable from CU is my advice.
 

DPG

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Sorry, mis-understood your description.
 

telectrix

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first check that the end of the cpc has not broken in the CU. common problem with 1.0mm.
 

DPG

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The thing is, if you don't know what has caused the fault, then you don't know what other damage there may be to that section of cable.
 
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The thing is, if you don't know what has caused the fault, then you don't know what other damage there may be to that section of cable.
Yes so i'll replace the cable, it's just whether to run a new one from CU or the easiest option from an existing circuit
 
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