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- Jan 13, 2010
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Hey folks, Just thought I would run this one by before the weekend.
I'm pretty happy with what I'm doing here but just wanted to check, as I've not carried out this particular alteration before.
Client has a large outbuilding which amoung other things they use as a games room. It is fed by a 50mcb in the house, single phase. They have asked me to fit a couple of storage heaters in there. The building is insulated, there's a 50amp supply so I thought, yeah why not. Obviously we will make sure the E7 tarriff is in place etc.
Ok, so in the outbuilding is an MK insulated consumer board (modern type) which is connected to the standard 24 hour supply. What I'm thinking of doing is feeding another CU off this one, using one of the spare ways. I will take this supply, Live and Neutral (or whatever we are supposed to call'em now, line, live, whatever) through a contactor, probably a 50amp 3phase contactor, but just using two poles. I will control this contactor with a single channel programmer time clock with battery back up. The programmer will be fed from the first CU. (I was thinking instead of a mechanical timer, incase there is a power cut, the client won't have to reset the timer and they will probably forget anyway). So this will feed my new CU where I will just have two or three mcbs feeding storage heaters.
Probably dead simple to most, but when one works on their own it's nice to bouce an idea off someone first.
So, am I on the right track, on a road to nowhere.
Thanks in advance and thanks for reading.
I'm pretty happy with what I'm doing here but just wanted to check, as I've not carried out this particular alteration before.
Client has a large outbuilding which amoung other things they use as a games room. It is fed by a 50mcb in the house, single phase. They have asked me to fit a couple of storage heaters in there. The building is insulated, there's a 50amp supply so I thought, yeah why not. Obviously we will make sure the E7 tarriff is in place etc.
Ok, so in the outbuilding is an MK insulated consumer board (modern type) which is connected to the standard 24 hour supply. What I'm thinking of doing is feeding another CU off this one, using one of the spare ways. I will take this supply, Live and Neutral (or whatever we are supposed to call'em now, line, live, whatever) through a contactor, probably a 50amp 3phase contactor, but just using two poles. I will control this contactor with a single channel programmer time clock with battery back up. The programmer will be fed from the first CU. (I was thinking instead of a mechanical timer, incase there is a power cut, the client won't have to reset the timer and they will probably forget anyway). So this will feed my new CU where I will just have two or three mcbs feeding storage heaters.
Probably dead simple to most, but when one works on their own it's nice to bouce an idea off someone first.
So, am I on the right track, on a road to nowhere.
Thanks in advance and thanks for reading.
