Search results

It appears there are 3 neutrals going to the non rcd side N bar but only 2 mcbs on that RHS half of the board! If one of the Neutrals has its mcb on the RCD end it will cause a trip, even if not on the incorrectly wired circuit. As the busbar pins are not all shrouded you should turn off main...

second mcb from left seems to have 4 wires in it! have 2 rings been doubled up? No RCD at all?

EC, your probably correct but personally I still get to do swa/mics/steel conduit etc. and lots of calls to fault find when the 'erbs' have gone! I take heart from the mass of 5day wonders now abounding as they don't have a clue about anything out of the ordinary 'house-bashing' scene, and the...

IMHO this would be a very dangerous thing to do since it would need both supplies switching off to isolate any alarm. run as you suggest just don't connect to second consumer unit, if it's going to be one house then it doesn't matter which one supplies the minimal amount of power to run them,

piece of metal with relevent holes drilled along one edge? or long thin vee notch cut in metal with scribed lines at measured widths. maybe should make and sell....

Gordon Brown to....

Mileson, slight error, over 120mtrs would need a 4mm swa to keep volt drop to acceptable limit eg, 4.62Vd still better than a120mm2 cable at 24v! regards,

MILESON, If you are generating 24V. D.C. unfortunately (as pointed out by the bickering 'gentlemen' on here) will not be practical to transmit over that distance. Without getting all technical 800watts @ 24V = 33.3 Amps, and would give either very high volt drop or result in a very large cable...

In no way to condone any bad practice we should remember how quickly the regs and standards have changed in this fair land. During my apprenticeship in the 1960's I went to a Kent Fire Brigade training centre, accommodation was 'Nissen' huts supply was single 240V o/h line looped from pole to...

hi both appear to be due to loose connections,Did you have a limp wristed sparkie do the wiring?

yes as Stoday states, its just like a motor starter with start/stop buttons. its a very simple circuit, live out to N/O button, momentary make sw.line back to relay A1 coil term. A2 coil term to Neutral. So pushing button energises relay, makes 2 sets of N/O contacts. one set connected...

Dave2010, If as you imply your house end mcb is rcd protected then putting a second one in the shed end is unnecessary and the house one will usually trip first anyway as it will already be seeing some leakage current from other circuits, not seen by shed one. it is recommended to export the...

it won't be a Y plan as that only needs a call for heat wire to the valve. without knowing what system you have it is difficult to say but some types of valve need to be driven open for heating and closed for off unlike honeywell which spring closed. look at valve(s), how many ? one 3 pipe /...

8/10 for Parish mags 1/10 for everything else, except sign written van with a Landline not mobile number 6/10 and yellow pages/yell. -minus 20/10 expensive waste of time.

I was going to say that! the 'spare core(s)' must be connected to earth and not left 'floating' as induced current from others can produce a 'shockingly' high voltage. If 'he' is going to use twin & earth to an adaptable box and connect the earth to a core of the armoured it must also be...

Sounds like he is using up some very old cable he has, since colours changed several years ago. The old steel wired armoured 4 core should really not be used but if he fully sleeves all cores at both ends with new (brown/blue) it could be argued it complies, but suggest he charges you 5 year...

They are still included because some jobs are specified to use trunking/conduit as CPC, (still allowed in regs). Agree they would be better with seperate fixings, not the loose oversized holes provided. I fix them to the back using short SPAX screws, takes seconds and can only help with...

a)kewtechnic auto stripper. b)Megger 1552 c)metabo double diamond wheel chaser with vacuum cleaner attached NB 'Double Diamond' 'chaser' sound a right alki....

if none of those numbers work try EDF energy networks London 0845 600 0102 Good luck!

Earthed metal enclosure around windings pretty much takes care of radiated field worries, my concern would be state of metal work as most substations use oil cooled transformers /switches, the oil in which is a known to be carcenogenic, so any leaks are potentially unhealthy. Most modern subs...