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As a "rule of thumb" there is no detrement having 2,3,10 RCDs one after the other, they will all give you the same protection (if they are of the same rating) however likley (possibly as much as a 7% failure rate then it might be considered likely to cause that small failure rate to reduce...

Well perhaps that is a sign that it is a decent subject - well done to the OP

Ive seen one or two electrical installations on the East Cost of OZ, one thing I noticed was they seemed to favour consumer units on the outside of a property (all be it in a "cupboard" ), is this the normal standard? Reason I ask is 1/ It seems that any miscreant might decide to walk into the...

Sometimes but not always. I`ve seen quite a few radials resembling a tree, in fact we did do a bit about "trees" as circuits at night school a few years back. Not every radial has a simple beginning and a simple end, notevery radial has no branches. You could end up with 10 ends and only 1 to 20...

Hmm - it`s not easy for me to tell what it is from that picture I`m afraid, sorry

You might limit the expected normal maximum consumption by number of sockets or by area served or even by both. How ideal is that? or not? Example - limit area served to 100 square yards then a few years later redifine the limit to 100 square metres, the difference is nearly plus 20% (around...

Well the answer (like most things in life) is "It in my working lt Depends" , once we add it depends into our question we can start to make a relevant comparison. Until you add "it depends" into a question you might have asked a silly question and/or get a silly answer. "How much does an...

I bet they were not as much fun as DP fuses on single phase supplies or the hand crafted "Wido Maker" Extesion Lead or the "Suicide Spray Head" for electric showers, though Eric ;) . Eeh - Electric can be fun it tends to start with the good old "Catch the Capacitor" Game (I wonder if they had...

Indeed Eric - Well said Lad ;)

Yes light fittings can be fun, right through the ages they can present many different facets of simplicity, complicity and good/bad temperedness an then as an adddition consider the switching arrangements and wiring configurations permutations possible (I wonder if anyone has ever invented a...

There are such people

I bet someone would like to buy that from you Sunray

Well Taylor lad - the Consumer units that were popular when I was a lad most had the humble rewireable fuses in them. 5,15 and 30 amps being common, mostly Wylex around her , the "New Fangled" MCBs came later and the Wylex ones were push buttons and the lever switches came later. Fuse box and...

If we designed a circuit in a domestic property and decided that all of the points would be either BS 546 15A sockets would we design as a ring final or a radial and what would we fuse the circuit at (or MCB size it) and would we limit the number of points and/or the area seved by such a...

I know a few folks baulk at the likelyhood of sink over socket encourages water leakage into an around socket as being a reason to say no but those same persons seemed to totally ignore a bathroom or bathroo and other pipework being above the ceiling of a location containing water pipes etc. In...

Well for a start the definition of what counts as and does not count as "circuits" in this particular situation could be a right dogs breakfast in the first place. Case in point on one thought - take two nearly identical domestic installations with plenty of sockets and lights, one on a four...

Whish part(s) of the regs do you all appear to think that this situation contravenes? I am not saying any of you are wrong but I do not reckon you are all automtically correct too. Indeed there are reasons for which I would be inclined to avoid it to some degree but I would like to know your...

Yes indeed - In my enthusiasm I left caps lock on too - sorry :oops:

tHERE IS ABOUT AS MUCH CHANCE AS OF CROUCHO MARX BECOMMING A MEMBER OF A CLUB THAT WILL ACCEPT HIM AS A MEMBER

Well I started out with 4 core alarm cable, the old traditional wiring for contacts and mats then progressed to 6 cores for those new fangled Racal 772 PIR detectors needing a +ve and -ve supply. 8 core was handy to allow an extra zone on the same cable run. 12 core enable one cable run to a...