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It might need RCD protection depending on how deep the cables are buried in walls ect i think you need RCD protection if the cable depth is less than 50mm any where on its journey. To work out the what size MCB you will need you can do a little formula: Watts / Voltage = Amps Though you...

I can see where your going with that though that only really stands for radial circuits how about ring? A single 2.5mm twin and earth is rated at 24 amps but is generally used a 32 MCB even though the total ampage would be close to 48, How do you de-rate a ring?

Not really as i was looking at flush mount consumer units the idea being to make as much room in a small space as the space may turn into a downstairs WC though the cut out and meter would have to be moved as i dont fancy P*ssing on that At what point do you thin de rating has a significant...

I have just been looking at some 21 way flush mount consumer units, assuming this was to be mounted at so call roof heigh i.e about 6ft from floor, It would be safe to assume that 90% of all cables would go into the floorspace above, but the unit only supplies 12 20mm ko and a 32mm ko...

From your picture are you trying to turn your fan on though the landing light? That seems some what stupid This would work But the FCU would not isolate the complete fan. A better approach would be to use http://www.tlc-direct.co.uk/Products/CA1dot5Gslash3slash50.html From a...

I asked a simular question in this thread http://www.diynot.com/forums/viewtopic.php?p=1378893#1378893 BAS draw a really helpful diagram near the bottom which work like this: 1: Twin and Earth From Loop lighting to FCU this provided full isolation of the circuit. 2: Twin and Earth to...

The oval conduit I can find is 22 or 29 thought the channel is quit wide already so might just get the 29. Correct me if I'm wrong the safe zones are horizontal and vertical of accessories in which case I'm ok, Currently i don't have RCD installed but the consumer unit is being replaced soon...

First you need to decided if your having a switch that is usable I'm assuming the FCU is to isolate the whole circuit and not a switch in which case take Neutral Live and Earth to another switch and take a the switch live from the switch probably marked L1 and live from the Com so thier is...

I want to plaster over a cable and found the capping method a pain before so I am leaning to the oval conduit. The cable is a single 2.5mm twin and earth from a socket to an fused socket what sized conduit should I use i take it de-rating wont be too much of a factor as the fuse in limited to...

I was nor thinking of the home DIYer who might not have tightened the earth correctly in the accessory to which MAY have fell out, Least if the incoming leads earth the box at least the screws would have acted as a back up to!

No comment from anyone

This is what I was thinking though if the accessory was removed or just the earth from the accessory the rest of the circuit would be without an earth assuming Radial not Ring I was thinking that earthing the back box would be a better approach with a fly lead to the accessory least if the fly...

I'm really asking about metal back boxes and earth these to your circuit a lot of people have talked about fitting extra fly leads to the back box to the front panel (switch socket ect) but does it make more sense to eart your back box with the incoming cables and fly off to you panel so if it...

Great so they push Part P on us across the broad but their is no uniform checks across the industry to test existing installations

With the addition of the Part P tax it should be near impossible for the average DIYer to work stupidly upon said electrics!! :lol: With that in mind how would one go about getting the electrics checked and signed off as adhering to current standards I.E electrics before the tax or so called...

[/url] Would you need a fire hood with a fire rated one? common sense say no

Little bit on the step side BAS and probably much more light than i need