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Quoting to do the electrics in a gym where the DB needs to be upgraded from single phase to a three phase because they are having 3 electric showers & a sauna. All the existing circuits are on MCBs apart from a couple of socket circuits which are on RCBOs When I change the DB would I have to...

Came across a main earthing arrangemant where the braid was clamped to the incoming cable and also linked to the Neutral. Would it be TN-C-S or TN-S for my cert?

Pricing to wire a new build property & it specifys that the central heating system utilises a gas combi with full zone control and weather compensators. They want one stat on gnd floor & one on 1st floor. Im not familiar with weather compensators - Can anyone give me some advice or...

Is anyone aware of a 360 degree sensor that is available, which will turn on a 500W outside light with a range of about 30 metres Cheers

Extended a radial circuit not in a kitchen or SL, What does it come under on the NICEIC details of work ?

Ive 1st fixed a 2 way & intermediate lighting circuit with two lights, but ive fed one light from the 1st switch and another light from the 3rd switch. Is it possible to make both lights work the same from each switch ? Cheers.

Wired a heating system using 2 zone valves & 2 stats(one for upstairs & one for down), boiler is a condensing boiler. Customer has now decided to have underfloor heating in the kitchen & a manifold has been fitted. Ive put a thermostat cable from the wiring centre for a room stat in the...

For 3 way switching, If the permanent feed is at switch 1 can the switched live be at switch 3 ? :?

Ive got a situation where I wired a 12KW boiler into a new build & now an oil boiler has got to be installed. The programmer which is a Horstmann H37XL is controlling the heating at the moment. The customer wants the oil boiler to take over from the 12KW boiler but still have it as a backup...

Doing some electrical connections on the motorway for some CCTV & one of the connections to the camera is approx 500 metres from the supply. When I put the switch up on the RCBO it wouldnt reset. Disconnected all the load on the cable & it still wouldnt reset. Ive walked the length of the...

Testing a split load CU today that another Electrician had fitted. It was in a very small office. There is one ring with 6 sockets & 2 lighting circuits (1 for the kitchen & toilet & 1 for the main room) All CU switches were off & the circuits were connected in the CU, but when I measured...

Just started doing some maintenance for a landlord & the previous electrician had done PIR's in all the properties. Been running through the list of jobs & one of them is "no rcd on cooker circuit" (it has a socket) Now I could replace the double cooker switch with one without a socket but it...

Has anyone got any recommendations for some LED downlights which would look good in a fairly small office reception area ? I think I want to go for LED because they are cooler running (arent they ?) & there is about 25 lights in a fairly small area & I dont want them too bright Any ideas...

Just finished rewiring a small office & I have been asked if I can put in the CAT5E for the new office. The existing Netgear switches & the server is still up & running in these new offices because it is linked to some portacabins & a workshop. The issue I have is, I was looking at one of the...

Just trying to quote for a job. Customer orginally had a lean to/summerhouse on the side of his house & this is where the cu was. Summerhouse fell down about 5 yrs ago & the electrician repositioned the cu on the other side of the wall in the lounge at skirting level behind the tv...

Just quoting to fit a new CU but the main earth from the incoming supply is the armoured twisted & connected into the MET in the existing CU & there is also a piece of 6mm earth wire twisted in with the armour & also connected to the MET of the CU. Ze reading 0.15. Somehow I think this needs...

Went to a job today to disconnect the storage heaters & add a supply for a combi in a property that was huge to say the least. (The ceilings were 4 metres high & then there were 2 staicases to each floor). It had been converted to 3 flats (one on each floor). I was working on the top flat...

Went to look at a potential job & could not find where the Main Earth started from. It was quite an old house & the DNO's tails (2 x 16mm)looked like they were coming down the wall in metal conduit. There was about 2" of conduit showing. There was no evidence of overhead lines. I selected the...

Sorry about another supp bonding question, but is there a reg to say you have to install supp bonding when changing the cu to the 16th? I have been doing it but just looking at a job that could be very difficult All other bonds up to spec

Seen this advertised. Might get round a few RCD issues. http://tpwcc.com/index.html