Does this setup contravene any regs or is it ok?

[Marcus Vaughan]

Clash of the Titans' anyone?

 

[Silly Sausage]

It contravenes 314.4!!!!!!!!!

No it doesn't.

The pertinent part of 314.4 is: "The wiring of each final circuit shall be electrically separate from that of every other final circuit, so as to prevent the indirect energizing of a final circuit intended to be isolated. "

Meaning, in my view, that there is NO electrical connection, in any shape, form or other, to another set of wiring fed from any another OCPD.

As has been repeatably said, a circuit wiring can take almost any form you want, within reason!

 

[SparkyChick]

The only section I believe that talks about future proofing is this:-

132.3 Nature of demand
The number and type of circuits required for lighting, heating, power, control, signalling, communication and information technology, etc. shall be determined from knowledge of:
(i) location of points of power demand
(ii) loads to be expected on the various circuits
(iii) daily and yearly variation of demand
(iv) any special conditions, such as harmonics
(v) requirements for control, signalling, communication and information technology, etc.
(vi) anticipated future demand, if specified.

I've always considered leaving spare ways as good practice and I usually aim for 25% of live ways as spare at the end of a job.

 

[Silly Sausage]

Clash of the Titans' anyone?

https://www.google.com/url?sa=t&rct...=Lvcnx6-0GhA&usg=AOvVaw01S1ATxuoj_SOJVSsL-oIu

 

[markythesparky]

The only section I believe that talks about future proofing is this:-

132.3 Nature of demand
The number and type of circuits required for lighting, heating, power, control, signalling, communication and information technology, etc. shall be determined from knowledge of:
(i) location of points of power demand
(ii) loads to be expected on the various circuits
(iii) daily and yearly variation of demand
(iv) any special conditions, such as harmonics
(v) requirements for control, signalling, communication and information technology, etc.
(vi) anticipated future demand, if specified.

I've always considered leaving spare ways as good practice and I usually aim for 25% of live ways as spare at the end of a job.

As have I but even from that reg, leaving spare ways in a CU is not a specific requirement.

OP has installed a massive 23 circuits CU and had 2 spare. But he decided wanted one more. It wasn’t necessary and if he’d had left it at two spares this thread wouldn’t even exist.

All because of an unnecessary risk.

 

[SparkyChick]

As have I but even from that reg, leaving spare ways in a CU is not a specific requirement.

No it's not and this comes up from time to time. My view is better to leave some spare... how many times have you been to a job wanting just one breaker and there is nothing

I know eventually the spares may be used, but that takes time.

OP has installed a massive 23 circuits CU and had 2 spare. But he decided wanted one more. It wasn’t necessary and if he’d had left it at two spares this thread wouldn’t even exist.

I think I would have contented myself with two.

No, it wouldn't, but as I've said it's interesting to see other peoples perspectives on the regulations even if you don't agree with them.

 

[markythesparky]

No it's not and this comes up from time to time. My view is better to leave some spare... how many times have you been to a job wanting just one breaker and there is nothing

I know eventually the spares may be used, but that takes time.



I think I would have contented myself with two.

No, it wouldn't, but as I've said it's interesting to see other peoples perspectives on the regulations even if you don't agree with them.

And that my friend is the first time we’ve agreed!

 

[Deleted member 26818]

I am surprised the OP went about creating the spare way in the manner that they did.
I would have added the Lobby lights to the rest of the ground floor.