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- 12 Sep 2015
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I've recently purchased an additional garage in a row of garages; it's a couple of garages away from my existing garage.
The existing garage has an electricity feed from my house; about 10m away. The feed is sourced from the consumer unit in the main house and sits behind an RCD protected BusBar and subsequently a B32 MCB.
The existing cable feeding from this B32 MCB and to the existing garage appears to be 16mm2 armoured cable.
The existing garage has a small two gang consumer unit with two plug in MCBs; 16A feeding a twin socket and 6A feeding an internal and external light.
The new garage has a couple of other garages in-between. The owners of these two garages have agreed that I may run conduit through the lofts of their garages to my new garage.
I wanted to educate myself before engaging with an electrician who will undertake the work; I like to know a little about what I'm asking / expecting.
I'd envisaged that we'd run a 10mm2 cable between the two garages adding a third consumer unit in the new garage; to service a couple of sockets and lights (the sockets bearing light usage).
Q1. To archive this would we likely replace the consumer unit in the old garage with a three / four gang consumer unit and protect the run to the new garage with a 16A MCB in the old garage and terminate with another consumer unit in the new garage? I'm assuming it would be bad practice to simply run a 2.5mm2 ring main and 1.5mm2 lighting circuit between the two garages from the existing old garage MCBs.
Q2. If replacing the consumer unit in the old garage and adding a new consumer unit in the new garage is the correct approach, is it bad / wrong to use consumer units in both the old and new garages that whose circuits are protected by an RCD? i.e. to use RCDs in series.
I'm sorry if these two questions appear daft; I'm just attempting to knowledge up before talking with an electrician.
I'd really appreciate any guidance you might have to offer.
The existing garage has an electricity feed from my house; about 10m away. The feed is sourced from the consumer unit in the main house and sits behind an RCD protected BusBar and subsequently a B32 MCB.
The existing cable feeding from this B32 MCB and to the existing garage appears to be 16mm2 armoured cable.
The existing garage has a small two gang consumer unit with two plug in MCBs; 16A feeding a twin socket and 6A feeding an internal and external light.
The new garage has a couple of other garages in-between. The owners of these two garages have agreed that I may run conduit through the lofts of their garages to my new garage.
I wanted to educate myself before engaging with an electrician who will undertake the work; I like to know a little about what I'm asking / expecting.
I'd envisaged that we'd run a 10mm2 cable between the two garages adding a third consumer unit in the new garage; to service a couple of sockets and lights (the sockets bearing light usage).
Q1. To archive this would we likely replace the consumer unit in the old garage with a three / four gang consumer unit and protect the run to the new garage with a 16A MCB in the old garage and terminate with another consumer unit in the new garage? I'm assuming it would be bad practice to simply run a 2.5mm2 ring main and 1.5mm2 lighting circuit between the two garages from the existing old garage MCBs.
Q2. If replacing the consumer unit in the old garage and adding a new consumer unit in the new garage is the correct approach, is it bad / wrong to use consumer units in both the old and new garages that whose circuits are protected by an RCD? i.e. to use RCDs in series.
I'm sorry if these two questions appear daft; I'm just attempting to knowledge up before talking with an electrician.
I'd really appreciate any guidance you might have to offer.