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Discuss 4mm cable into the bottom of main switch. in the Electrical Forum area at ElectriciansForums.net

Steve93

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Trainee
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Eicr today had a 4mm T+E connected into the bottom of a main switch which went to a separate dB with 1 20amp rcbo. Then swa to a hot tub. That part is fine. What I’m unsure about is the reg I can say that the cables are not ok in the bottom of the main switch. The other dB is only about a ft away from the main one. What’s people’s thoughts on this? I know it’s rough as you like!!
 
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Steve93

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Trainee
  • Thread Starter Thread Starter
  • #3
What would you code it? If at all? It’s rough as but can’t find anything on it
 
D

Deleted member 9648

If the 4mm is securely terminated along with the busbar/neutral link then I cant see a non-compliance. You need to use your judgement on whether the termination is sound. The different size conductors in the terminal may not result in a sound connection
 
I assume the OP is referring to a standard 100a MS in a DB with a busbar and N link in the bottom
If that is the case you must question whether this is a means of connection which is condoned by the consumer unit manufacturer. Are the conductors suitably sized to withstand fault and short circuit current.
 

GBDamo

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Supporter
If that is the case you must question whether this is a means of connection which is condoned by the consumer unit manufacturer. Are the conductors suitably sized to withstand fault and short circuit current.
Not using a type tested assembly as intended by the manufacturer.

C2, as it could cause poor connection and possible CU fire. Bit of a judgement call.
 
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