Recent content by copey84

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    Spds - multiple consumer units

    They are expensive so why fit three if I can make one cover.
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    Spds - multiple consumer units

    Hi Risteard, I'm thinking the surge will be placed in either a 2way stand alone enclosure or another consumer unit to house distribution to the three consumer units serving final circuits in house and garage. Do you know what would work best, this setup will be in house not meter cabinet...
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    Spds - multiple consumer units

    Thanks mainline. I think my contactum surge is a c1 so will have to go after the s type rcd. Reading up on it c2 creates a short between live and neutral then shunts to earth preventing dangerous fault not clearing on a tt, think that's the way it works. With that said the surge is a parallel...
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    Spds - multiple consumer units

    Yes the two consumer units are in same location. The supply from meter to house is 20m. In the house the supply is split on henly blocks or as we call them Iscos. From here both consumer units are feed in house then a single way consumer unit supplies the garage 15m away. Basically can I...
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    Spds - multiple consumer units

    Hi mainline, are you using the consumer unit to serve final circuits or are they feeding other consumer units? I had the idea of taking supply to a separate consumer unit in house above the two for final circuits. Fit the surge in it and treat the out going circuits as feeds to the three...
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    Spds - multiple consumer units

    Problem is I have two consumer units in house and one in detached garage. I want to cover all three with one type 2 spd, so customer doesn't have expense of another two spds.
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    Spds - multiple consumer units

    Correct mainline. It's a 20m run from meter cabinet to the house consumer units, then from the house to garage is a further 15m.
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    Spds - multiple consumer units

    To get spd as close to main fuse it will have to go in meter cabinet. I was thinking the spd will have to go in plastic enclosure if it's before the rcd incase of a fault, if metal could come live, and only main cut out fuse for protection, which will not operate in a tt set up.
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    Spds - multiple consumer units

    Thanks for the reply. Was thinking about configuration of spd in meter cabinet. Should I have the spd before the s type rcd, or will the delay in rcd operating time allow the surge to clear. Probably hard to determine. If the rcd was before the spd then I could use a metal enclosure if not will...
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    Spds - multiple consumer units

    Hi all, what is the best way to configure surge protection in domestic dwellings when you have multiple consumer units? Does each consumer unit need it's own spd, or can I fit one in parallel with all consumer units? I have a 20m run from meter cabinet to two consumer units in house, then...
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    Parallel generator, earthing and bonding

    Hi sorry for delay in reply been busy. From previous posts and my own research I think the install will be ok set up as a tns, with gas bonded back to generator MET. My main concern was there could be a danger of bonding the gas to the generator creating a shock path from any other exposed or...
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    Parallel generator, earthing and bonding

    Yeah bit of confusion by saying the gen and supply are in parallel, my bad. Good point about labeling, will make it clear there's a generator supplying some of the load. Can't see anything specific about bonding in the document and there's nothing in regs, can I just size it based on neutral...
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    Parallel generator, earthing and bonding

    Hi, should have said the existing supply is not fit to take the added load, cheaper to buy generator than increase supply. I plan to run 50mm2 to a suitable 3ph high load board, independent from mains supply. Earth the centre point of the generator with a 5/8 rod to get Ra as low as possible...
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    Parallel generator, earthing and bonding

    Hello, can anyone advise on bonding of extraneous conductive parts when supply is from a generator run parallel with distribution network? There'll b a 200kva generator supplying spray booths that have a gas supply to them. The metal pipes aren't underground but connect to tanks outside sitting...
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    Paralleling to reduce Voltage drop

    Hi, i got talking to customer today about supply and since it's not possible to upgrade existing cables he's decided to take supply of the house. It means cutting concrete but it's the only solution. For anyone who's interested the paralleling of cables wouldn't have worked anyway. The run is...

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