Welcome to our Electrical Forum - We started out providing electrical advice just
for the UK - But now we have specific advice for the USA too! - Register for free and
share American Electrical Advice.
I have installed a TT system at my garage, and it is fed via 10mm 2 core armoured cable, does the armour of the cable have to be earthed via the supply tncs side or can it be glanded and earthed the garage side (TT).
Anyone know the regs ?
Quickie - Would you say this is ok?
32A MCB feeding 6mm T&E which is then connected to a 2.5mm T&E & 1.5mm T&E cable via a 30A terminal block in plastic terminal block housing buried in stud wall.
The 2.5mm feeds a 3kW immersion heater with 13A SFU at the heater end.
The 1.5mm feeds gas boiler...
Looking for abit of advice?
We are quoting to replace some SWA cabling feeding various sub boards.
I have an ABB power factor correction module in place, this is feeding a control panel in the plant room, feeding motors and ventilation equipment
We need to replace the 2 x 150mm 4 core...
thoughts on this would be appreciated.
I have a 3 phase 100 amp PME supply, feeding 3 domestic dwelling about 80 mts away. Done cable calc and have chosen 50mm 4 core swa using armour to protect cable.
In the 1st dwelling I have 3 phase metal DB feeding 3 sub mains, 1 to 1st & 2nd...
Hi Guys, does anybody know what the fundemental difference is between a type 1 rcd in relation to a normal domestic type to bs 61008. These have been mentioned for supplies to electric vehicle chargers....?
Many thanks in advance ))
Hi can any one help please doin some work on a house and one of the problems on the test report is there's a 3 core feeding 2 breakers ( red feeding downstairs lights and yellow feeding upstairs lights) and only the one nuetral. Now if I could rewire it I would cables concreted into the floor...
Hi all, just installed a polypipe under floor heating system to an existing Y plan, the valve is a V4073A,with this system the UFH stat should independently operate the UFHeating from the existing central heating, the snag is with the time clock off and the UFHeating stat on both the UFH & the...
Main switch 160a bs88fuses, 35mm tails feeding busbar chamber with switch fuses ontop feeding distribution boards. A c2 has been given to undersized main tails. I thought that because the tails are only about 400mm long from switch into busbar that it was ok? Thoughts?
My Son has just moved into a flat with 2 storage heaters on economy 7. The CU is an older MK sentry one with 2 incomers fed from separate feeds from the meter, 1 permanent, 1 for economy 7. There are no RCDs which is not ideal. Options for rectifying that as I see it are:
Replace current setup...
a big hotel group has asked us that they want 2 way dbs in each bedroom feeding one socket and 5 lights all led fittings, but they want the supplies to boards daisy chained from 10mm t&e or swa feeding 4 rooms per circuit. the only way ive ever done this is sub per board, but cant find anything...
Subject testing multiple DBs with Easycert
For new 3 ph. installation
DNO – Fuses
Client HRC fused Main Switch isolator feeding
MCCB panel having 1 X MCCB main switch feeding
Integral bus bar to 27 3ph MCCBs these feed remote DBs
Page 2 SUPPLY CHARACTERISTICS = DNO...
Right, 3 phase supply into main distributors fuses, then through the meter then feeding a busbar section. The from the busbar section is feeding 3 main isolators feeding dis boards.
Does there need to be a main switch or isolator between the meter and busbar section? Or is the...
In process for tendering for a job, 3 floors and cellar, presently 14 rooms, going to be extended to have another annex, conservatory and another extension for kitchen.
Im thinking the way to go on this one is RCBO's, splitting it so each floor has a socket circuit and a...
Hi all been a while since i been on here but been asked to connect up a couple of big ups's for a server room. Easy enough but problem is they want them to be powered by 2 x 3 phase circuits from another dis board ie 2 mcb's and 2 x swa feeds, I have asked them to use seperate boards in the...
Hi all just done pre site survey on a job found the following (never come across this before)
2 ccu's in the property 1 located next to the incoming head (A) and the other (B) is located approx 15 meters away
Both CCu's are feed via henley block. (A) tails are 25mm however the cable feeding...
Have to make off some 95mm lugs onto an old Bill main switch, which has 160A fuses. There are 4 terminals with an M10 dome head bolt with a square shank for the 3 phases and neutral, and there are currently 2 lugs on each bolt, 1 feeding a main dis board and 1 feeding a new switch fuse...
ElectriciansForums.net (formerly known as ElectriciansForums.co.uk) was setup in April 2006 to provide free electrical advice to both professional and DIY electricians. Whether seeking advice for auto electrics, trying to find electrical installation condition reports (EICR) form downloads, or whether you're here just to talk to other electricians; we've been a first-choice website for tens of thousands of sparkies for well over a decade.