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Aha! yeah that makes sense....there must be a lot of people getting home from the shop with their new 12 led lamps and they end up in a drawer

There are plenty of lamps around to replace 240v halogen recessed type lamps, and I see some to replace 12v halogen lamps. I was wondering if these led lamps work ok with a typical supply off a single transformer as I know sometimes a lighting transformer needs a minimum load. Especially when...

thanks karis, that is useful info and helpful

...oops there goes another £84...

I've inherited an old bathroom (2 x 3m) that needs a complete refit including plastering, just wondered if a wet room type bathroom is better? are there any drawbacks or advantages? and are the costs much different?

moved to plumbing

Thanks for the reply. I'm guessing permanently connected is to stop something else to be plugged into the socket, Would the use of a non standard socket and non standard plugs cover this aspect?

Scenario Tumble drier and washing machine in a bathrooom both plugged into twin socket behind washing machine, socket is RCD protected at DB and is not 3m from bath. Would this comply if the socket was converted to two fused (not switched?) spur outlets? Is there a simpler way to comply?

yeah I got k a bit out... guess I got a bit blinded with tables and curves, thanks guys.

6mm2 main earth, TN-S, 100a BS1361 main fuse, 1610A measured fault current. I tried this on the adiabatic equation, and compared to fuse curve and it seems to just be large enough. However I've been known to make mistakes! Can anyone confirm if this seems correct please? (I used 115 for k but...

While I appreciate the caveats and associated underpinning knowledge, I was wondering if anyone could answer the questions I asked

can you solder lead pipes with the same solder as used for copper pipes?(obviously not the lead free variety), I'm looking to solder over a small pinhole - any special techniques required as opposed to copper?

There should still be enough L to N voltage which operates the RCD function, so I'm not sure that scenario would necessarily cause the RCD function to fail to operate. There is a possibility with TN-C-S that this situation could occur, but I've found RCDs always operate on a short to earth...

No I'm not considering the type of RCD. Yes I know the difference between B and C curves. I would agree RCDs (and at this point in time the RCD function of an RCBO) fail more often than MCBs so there is a valid case for the underlying EFLI to be correct for the type of MCB or RCBO fitted...

Hmmm....food for thought. With an installation with a seperate RCD and MCB it would make sense to ensure the EFLI was low enough to suit the C MCB in case the RCD was ever removed or bypassed (note - the EFLI should always be checked at this point). But an RCBO is not an RCD and an MCB, it...

Just started looking at these as July is approaching fast. They seem to be sold commonly as type A RCDs with type C MCBs. I gather the curve for the MCB is not so important for personal protection as the RCD will do that job quicker. As the C curve will give less nuisance tripping is this...

I'm not too sure if you are saying the same thing as me in a different way or suggesting something subtly similar or different? An extraneous conductive part is not part of the electrical installation and is liable to introduce earth potential, and should be equipotentially bonded. An exposed...

A far as I am aware EB is designed to bring anything connected to it up to close to the supply voltage during a fault condition. EG - during the fault and the allowable (up to) 5 seconds for a fuse to blow the EB might come up to 180v, so with 230/240 in one hand and 200 in the other you will...

The British Standard on ventilation has not changed since 2000. The guidance on classification of inadequate vetilation was altered in Aug 2005 and will change again in Aug 2008. British Standards are a guidance on how to do things correctly, not a legal obligation. However if a gas...

Yes that's what I thought, both wires would be subject to an external heat source (the other wire) and would fail slightly earlier. As there are no certainties it leaves a vague uncomfortanble feeling about the practice. Not particularly dangerous, but dodgy.