L
Leah
Hi All, I've just picked up a small commercial job, it's a large storage warehouse with low energy usage. The main board feeds industrial mated sockets throughout the building (it's a marquee company so these are the fittings they have for their portable appliances and cabling) then a sub board feeds a couple more industrial and the lights and power to a small office and break out room. They are now fitting a small sewing room where one or two people will be working on machines and the subsequent lighting.
The problem I have is that there are no spare ways on the sub board or main, the breakout room has it's own circuit for the sockets and has lights on the same circuit as the office. I'm reluctant to extend any of these existing circuits as there's quite a distance between the breakout and sewing room so volt drop is a concern.
As the sub board is central to these locations when (if ever) is it ok to double up at the MCB? I've always managed to avoid doing this but have come across it frequently in existing installations, in which case I've treated it as one circuit and carried on.
You thoughts would be appreciated.
The problem I have is that there are no spare ways on the sub board or main, the breakout room has it's own circuit for the sockets and has lights on the same circuit as the office. I'm reluctant to extend any of these existing circuits as there's quite a distance between the breakout and sewing room so volt drop is a concern.
As the sub board is central to these locations when (if ever) is it ok to double up at the MCB? I've always managed to avoid doing this but have come across it frequently in existing installations, in which case I've treated it as one circuit and carried on.
You thoughts would be appreciated.