Recent content by thomP

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    Wiring a contactor

    Thanks - a picture paints a thousand words - that really helps. T
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    Wiring a contactor

    Yes there is a schematic though not particularly detailed for a first time user, where I was a little unsure was the 4 terminals but as it's a 2-pole I assume that it switches live and neutral hence 1,3 and 2,4 will be wired live/neutral. I agree with what you say about the fixed timer but I...
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    Wiring a contactor

    I haven't wired a contactor before (this is a 2-pole Square D CCN225) and would appreciate any views and advice on the following: I have a 5.5KW heater that I'd like to control via a timer. I'm proposing to use a standard plug in timer to power the coil on the contactor (I'm assuming A1 is...
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    moisture in integral garage cavity wall

    We're converting our garage which is about 50% underground (we're built into a slope). I noticed that there is moisture in the cavity (checking for insulation found droplets of water on the polystyrene beads). Buiding Regs have suggested a vapour barrier attached to inside wall then build a...
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    Cascaded RCDs

    Thanks bongos, yes it's due to be fitted next week.
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    Cascaded RCDs

    I'm having a new consumer unit wired in to replace a dated fused type. The current set up has a standalone RCD unit (rated 100mA) between the supply and the unit. The electrician is simply going to swap out the unit with a new split unit. This means that the circuits not RCD protected by the new...
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