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Rear entry three phase board

Discuss Rear entry three phase board in the Commercial Electrical Advice area at ElectriciansForums.net

I would have brought the cables into a bit of 100x100 trunking below the DB, removed the plate at the bottom of the board and taken the cables up through a slot in the top of the trunking protected by a bit of paxolin or even rubber edging, maybe even grommet strip :eek:
I'd have glanded the SWA into the bottom of the trunking.
 
https://www.NoLinkingToThis/p/wylex...gclsrc=aw.ds&dclid=CKO3xb2Cjt0CFWwW0wodkFMJIw

Buy that.... Gland your swa in the top of the board properly, jobs a gooden...

Have you factored in the ccc for those tails in the trunking?
 
Last edited by a moderator:
suffolkspark said:
https://www.NoLinkingToThis/p/wylex...gclsrc=aw.ds&dclid=CKO3xb2Cjt0CFWwW0wodkFMJIw

Buy that.... Gland your swa in the top of the board properly, jobs a gooden...

Have you factored in the ccc for those tails in the trunking?
Click to expand...

I did suggest that kit to the customer before I started. He said he wanted to use the meter he already had.

What does CCC stand for, I do not know what the abbreviations you lot use. Is it Cable Capacity Chart?
 
Should have taken a step back and thought what is the best way to do this.
 
Last edited by a moderator:
The supply company feeds a meter, then it goes to the 1st board which feeds 4 sub boards, there is a meter before each sub board. The 4 sub boards are protected by 63A 3 pole CB's.
 
Last edited by a moderator:
Gigsy said:
?
The supply company feeds a meter, then it goes to the 1st board which feeds 4 sub boards, there is a meter before each sub board. The 4 sub boards are protected by 63A 3 pole CB's I said RCBO by mistake.
Click to expand...
Usually, you would have an MCCB board with meters in the outgoing all in the landlord's cupboard.
 
Are all the outgoing circuit RCBO protected?
Gigsy said:
All the circuits from the board i installed will be RCBO protected
Click to expand...
I would of done as Adam posted with the incoming SWA if you have to have that meter at that position would have been a trunking down the RHS SWA made off at top end cap then T off like you have done for the meter.
 
anthonybragg said:
Are all the outgoing circuit RCBO protected?

I would of done as Adam posted with the incoming SWA if you have to have that meter at that position would have been a trunking down the RHS SWA made off at top end cap then T off like you have done for the meter.
Click to expand...
You would have made off the SWA to the end cap of the trunking?
 
Gigsy said:
How would a MCCB prevent such an event?
Click to expand...
If there is a fault on one of the final circuits you would want the MCB to trip faster than the MCCB. A practical example of this I recall was one of the final circuits we installed the chippy put a nail through the cable now as we had a low ELI it took out the RCBO as well as the existing 50A MCB protecting this D.B. bad discrimination ( sorry selectivity new word)
 

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