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  1. D

    Rcd not tripping

    I'm stumped, fitted new cu in one bed house today RCD would not trip using test button or on test. The only time it trips is when a load is put onto socket circuit, or the socket on the cooker isolator, no faults have been found during testing. Its a TNC-S system ze of 0.16ohms IR of >999 on...
    • Doctorsparks
    • Thread
    • connected correct rcd tested tripping worked
    • Replies: 23
    • Forum: UK Electrical Forum
  2. cliffed

    Unsatisfactory

    Connected new central heating system,did usual test Zs at switch spur for boiler.Also a visual only on the 3 bed property.Noted no earth on oil supply,upfront a 100ma rcd it's a tt system.Told all this to the gaffer,apparently we did the pit report sometime ago,the client knows all this but...
  3. JD6400

    100+ volts down earth ????

    Just had a call from two of our men who are testing an agricultural dealership , they have found 100 + volts on one of the lighting cpc's . To cut a long story short , they have cut around 2 and a half meters out of the 10 meter the circuit ( 1.5 T+E ) and have it laid on the floor . They say...
  4. S

    rcbo tripping times

    Hi all help please,I tested a6 amp rcbo30ma at board with out load connected the rcd results are 310ms at times 1 and 50ms at times5 so I changed it thinking it was faulty tested new 1I fitted got same results I then rcd tested another rcbo in the board another lighting circuit results are fine...
    • sparkygrant
    • Thread
    • another connected rcbo results tested times tripping tripping times
    • Replies: 16
    • Forum: UK Electrical Forum
  5. D

    when i press switch 1 switch2 light come on as well

    i wired kitchen florescent loop in method then i took live feed for outside light (flood light with sensor) direct to switch then to light.when i switch kitchen light on the outside light switch come on as well.can anybody help me with this please.
    • derby 000
    • Thread
    • connected fluorescent light press switch when you've
    • Replies: 25
    • Forum: UK Electrical Forum
  6. Gnasher

    Conductors not connected

    Can anybody give the reg number that states that any conductor not connected whether in a multi core cable or single in a containment system should be connected to earth. I may be wrong but as far as I am aware this is good practice and there is no reg stating it should be done. Looking...
  7. U

    Underfloor Heating

    Hi, Now I understand that this question may seem pointless, so humour me anyway... A lady had underfloor heating installed about 10 months ago along with her new kitchen... I was there for the kitchen install but didn't do the mats, there are two mats serving her kitchen and utility room...
    • ultinator
    • Thread
    • connected heating kitchen probe programmer reading underfloor underfloor heating
    • Replies: 5
    • Forum: UK Electrical Forum
  8. R

    Radial Circuit

    Recently i have wired a small dwelling house. I have used 2.5 mm Wire for a radial circuit of 2 double and 2 single sockets. (probably the cable length of 35 m) I am a bit conscious to know whether it will work for longer time. or i will need to make it a ring circuit. WHAT DO YOU SUGGEST?
    • Rajesh Kerai
    • Thread
    • circuit connected night outlets problem radial radial circuit suggest
    • Replies: 39
    • Forum: UK Electrical Forum
  9. S

    Commercial canopy fan help

    Hi i have a canopy fan to wire up the problem is a 3rd party has left no wiring diagram for it. It will be working of a speed controller which has the connections N L E U1 U2 1 2 . The Fans make is RUCK Ventilation DVNI 500 E4 Single phase it has 5 conenctions at the isolator. It is numbered...
  10. B

    Upgrade supply cable for 3 phase.

    Hi. Scottish Power upgrade incoming power cable to 3 phase. What was surprise me is they dig a hole in pavement and connected to existing cable. Should I be surprised? All cable, from connection point is 4 meter long and 1.5 meter is inside the building with easy access.
  11. A

    Alarm cable at cu

    Hi all, Have recently moved into a new build house which has been wired for alarm system throughout. however there is one alarm cable (6core) which is by the consumer unit, can anybody think what this is for or shed any light on why you would want a alarm cable in cu?
  12. M

    Using a domestic EPC for a PV system connected to a communal supply only.

    Does anyone have any experience of this ever being acceptable? The situation is a PV system is to be installed on a block of flats. My client has been told by an energy supplier, via an installer that a domestic EPC for a flat is acceptable to go with a fit application where the PV is to be...
    • Mattty
    • Thread
    • communal connected domestic energy possible supplier supply system using
    • Replies: 2
    • Forum: Domestic Electrician Forum
  13. i=p/u

    Earthing panel on petrol station or not to earth it

    We installing this panel below on Monday in a petrol station. The swa is coming in the bottom so we need to cut out square and add paxlin plate to gland into as the petrol station is not connected to earth from submain, and on its own TT system..
  14. K

    Led driver

    Might be a silly question but, on a constant current led driver for example 700ma is this the max current drawn on the output side whether 1,2,3 or however many led are connected, only reason I ask is because I saw some LEDs connected with cat 5 and wondered if that was ok to do?!
    • keniff
    • Thread
    • connected constant current driver led led driver
    • Replies: 3
    • Forum: UK Electrical Forum
  15. P

    Battery How do I charge 2 12V leisure batteries connected in series from my starter battery?

    Hello electrical sparkly people! Can anyone tell me I can charge two 12V leisure batteries from my starter battery? The leisure batteries are connected in series to charge a 24V 3000W (6000W peak) inverter. To confuse things, I also have two 12V batteries which came with my Ford Transit Jumbo...
  16. B

    Testing emergency light inverter

    Hi all, Would anyone know how I can test the emergency light inverter in a fitting as the batteries in the fittings are not charging. The fittings are about 5yrs old, but as per usual, the installer never put the installation date on the battery pack. I'm not too sure if my thinking of...
    • BillyTheSparks
    • Thread
    • batteries battery connected emergency inverter light testing voltage without
    • Replies: 2
    • Forum: UK Electrical Forum
  17. P

    What am I accountable for on CU change as got bad test results.

    Hi, all continuity test results are ok now I replaced all the loose earths in all the sockets and lamp holders around the house. The radial going off to feed the boiler/shower/not sure what else, all branches out of a old unfused spur where the neon no longer works, and this radial is where I am...
  18. S

    Indicator lamp connected across contactor coils

    Someone once told me this is bad practice but I cant remember why. Could anyone remind me? Thanks
  19. T

    Wired Smoke Alarms Query!

    Hello all, A long time lurker but only recently registered here. I decided to take it upon myself to replace 2 wired smoke alarms in the house today but have came to a stand still in terms of which colour wires go where and was looking to pick somebodies brains amongst these forums! Its all...
  20. D

    Sub board in garage

    ok so im working in a property and the lady has a 16A RCBO on the RCD side of the fuse board in her house... it feeds a 100A 5way rcd CCU in her garage supplied by 2.5 SWA... everything in the garage turns on fine but when you plug anything into a socket it bypasses the 100A RCD in the garage...
    • DD1990
    • Thread
    • board connected fault garage house
    • Replies: 8
    • Forum: UK Electrical Forum

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