Why is it that when my lounge dimmer on 2 way lighting is on and when I put a neon tester on the earth it lights up but does not give any shock.This includes the back box even with the earth disconnected from the switch.Is there a fault
Dimmer wiring
- Thread starter jcb208
- Start date
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Yes, possible down to the equipment you are using to test with, neon tester cannot be relied on, when testing for voltage always use an approved two pole/probed voltage indicator. Bin the neon!
You need to test (on low ohms) between the CPC(earth) at the back box and the Main Earthing Terminal near the consumer unit or meter.
It should be less than 1Ω.
The voltage between the permanent live at the switch and earth should be 240 ish.
It should be less than 1Ω.
The voltage between the permanent live at the switch and earth should be 240 ish.
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Just done a quick test with meter and longish lead for earth continurity and the earth is open on this room ,the other lights read 3 ohms also sockets are about 2 - 3 ohms.So is that mean theres a missing/broken earth in this room and take it it will need sorting out..
Yes. Well done.
forget that as when I switched the light I think I have blown the dimmer switch as it went pop and triped the lights so by connecting 1 earth back Up I have created another fault.Should there be continurity between newtral and earth
Yes - unless any double pole switches are open.
Have you pinched any wires screwing things back in place?
Disconnected all the lives and newtrals in the junction box and connected up just the lounge with a block connector on the switch live and the lounge lights work as they should and all test ok 240 live newtral and earth live.You cant blow things by connecting 2 way lights wrong can you as there are no newtrals. Got 2 more cables disconected now which must go to the other lights in a loop .I take it the fault could be with them
No, unless one of them touches earth.
Ok Im hoping its fixed now as Im such a **** i left the yellow strapping wire out which must of touched the earthed back box
which blew the dimmer Still have a cable in the junction box which does nouthing .Oh well costly mistake new dimmer £18
which blew the dimmer Still have a cable in the junction box which does nouthing .Oh well costly mistake new dimmer £18
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