Multi-core neutrals and earth

[Gigsy]

I just drew this. Not sure if it makes sense or even it is correct. Any feedback would be welcome.

 

[ruston]

[QUOTE="Gigsy, post: 1502649, member: 97625.

Do you know what reg, forbids shared neutrals?[/QUOTE]

Have a look in the index of BS 7671. That will lead you to 314.4

 

[Gigsy]

I found the regulation in BS7671

314.4, yellow book

When an installation comprises more than one final circuit, each final circuit shall be connected to a separate way in the distribution board. The wiring of each final circuit shall be electrically separate from that of every other circuit, so as to prevent the indirect energizing of a final circuit intended to be isolated.

 

[Gigsy]

[QUOTE="Gigsy, post: 1502649, member: 97625.

Do you know what reg, forbids shared neutrals?

Have a look in the index of BS 7671. That will lead you to 314.4[/QUOTE]

Thank you

 

[ruston]

@Gigsy . Nice to see manners. It is a pleasure.

 

[FatAlan]

You’d still have one MCB at the house DB for each out building and as others have said, have your RCD’s at small DB’s at each out building for the individual circuits. Does your client have a particular reason for their design other than wanting to have s massive consumer unit at the house?