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    RCD protection for bathroom lights

    Wouldn't this need to be done by a qualified electrician? I'm sure I could do it, but don't know if that leads to a bigger problem. Isn't that an alteration to the circuit? If I don't actually need to add RCD protection to stay within regs how compelling is the safety argument?
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    RCD protection for bathroom lights

    Thanks, that does clear it up for me. Unfortunately the ceiling is 2.2m from the floor!
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    RCD protection for bathroom lights

    The question then is whether the removal of the transformers from the circuit constitutes an alteration?
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    RCD protection for bathroom lights

    Thanks for all the replies, apologies if my terminology was inaccurate. That has perhaps left some doubt in my mind. So, just to be clear, replacing 12V down light fittings (halogen) with 230V down light fittings (LED) in bathroom zone 1 does not require RCD protection under the regs. Changing...
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    RCD protection for bathroom lights

    Hi, I've seen lots of answers to questions on this topic, but can't find a specific one for my situation. Our house was completely rewired professionally about 10 years ago. At that time the electrician installed low voltage halogen down lighters in the bathrooms. they were pretty poor quality...
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    New Rayburn Problem

    Many thanks for posting this link. Looks like it isn't too close according to the document - doesn't seem to be far enough away to stop the smoke fumes though :(
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    New Rayburn Problem

    Hello My neighbour recently extended their property (work not yet complete) and in the process installed a Rayburn in the new kitchen area. We did have a quick look at the plans during the planning stage but either didn't notice or hadn't realised the implications of the Rayburn (not sure it...
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    Pressure problems on Firebird Combi

    Well when we first had the problem the buidlers crawled all over looking for a leak in the underfloor heating system. It was pressure tested to 3 bar without a leak on installation. Haven't had the temp up that high at all. If it was leaking under the floor surely I would notice tiles lifting or...
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    Pressure problems on Firebird Combi

    Bore Hole pressure is generally higher than 1 bar, I can't remember without checking at what pressure the pump from the borehole kicks in. I suppose it's possible that it was just starting to fill the water supply pressure tank and the pressure had equalised at that point. I hadn't thought of...
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    Pressure problems on Firebird Combi

    It varies - during the summer it didn't need any attention, which is not surprising as the heating wasn't on, but may be relevant. Just now I an topping up once a week at least, if I leave too long the amber light comes on and it cuts out. This morning when I topped up there was a lot of...
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    Pressure problems on Firebird Combi

    Thanks for the reply. No black water when I bleed the radiatior - all rads and pipework are also only 3 years old. If one of the valves was leaking wouldn't I be able to see the leak and wouldn't one of the engineers have spotted it - or is it hard to find?
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    Pressure problems on Firebird Combi

    Hello I've read through related topics on the board but none seem to fit my problem. Just under 3 years ago I had a Firebird Combi boiler installed as part of a complete refurbishment of the property. From the very beginning we had problems with pressure dropping over a period of a few days...
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    Weatherproof Junction Boxes

    Thanks to all - good advice
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    Weatherproof Junction Boxes

    Thanks Qedelec. RF Lighting. The boxes are (1) to reduce an armoured cable to a 1.5mm flex and (2) seperately mount a wireless switching box which will take in 3 x 1.5mm flex through w/proof glands. All will be sited externally under a plywood and tarp cover, but obviously be subject to damp...
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    Weatherproof Junction Boxes

    Can anyone give me a tip on the best way of fixing / sealing a weatherproof box to a wall (externally, but in a covered space). I assume that the simplest thing to do is to coat the screw that fixes the box to the wall with a silicon sealant. Is that correct? Is there any particular sealant to...
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    cable sizing / length of circuit

    Just one final question - presumably it's OK to reduce the cable gauge as the load decreases. EG 4mm from the CU through to the switches to support the total load, but then only 1.5mm to connect to an individual transformer if the voltage drop to the end of the cable remains within 4% overall...
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    cable sizing / length of circuit

    Thanks to all - very useful advise and info :D
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    cable sizing / length of circuit

    Just had a look. The website indicates that I can use 1.5 mm for the whole length (which seems light). It also states that there will be quite a voltage drop over 30M. There isn't any function that allows a calculation of voltage drop with a larger gauge cable. Does voltage drop matter if it's...
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    cable sizing / length of circuit

    I am planning on running armoured cable from an rcd protected fused spur out to a shower proof area housing pumps etc and weatherproof switches for a pond. The pumps do not draw much (max 3 amp) and the length is about 3M from CU to spur (internal) and 5M from spur to pump (external). This seems...
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    Adding a circuit

    In answer to Lectrician there is quite a long distance to cover and I would need something like 6 double sockets, with spurs for other uses (just for convenience, not heavy loads) . It seems like it would use less cable and take less time to me. Also this would seem to give more flexibility of I...
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