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Discuss Fluke T120 voltage tester in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

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Gixxerdan

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I have just recently bought my first house and been trying to figure out how the house has been wired incase anything needs doing (such as putting the kitchen sockets on a separate MCB and putting spurred sockets on to the ringmain since everything is stripped back in the house like carpets etc) and I have brought my Fluke T120 voltage testers from work. When I am testing a couple of the sockets on the ring main between L&N however, the red light comes on and the unit beeps but the breaker is off and there is definately no supply to the socket. Does anyone know what the red light means?? The manual just says that it is single phase testing but the light does not come on for the other sockets??

Thanks, Dan
 

telectrix

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which light comes on? i imagine that the tester is reading a resistance low enough to activate the bleeper and illuminate the continuity LED. ( this can be anything up to about 100ohms ish.)
 
G

Gixxerdan

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  • #3
The continuity led is a separate one and is orange. The symbol next to the red light looks like it is a warning: live symbol (triangle with the lighting bolt in the middle) but there is no voltage there?
 
On my fluke the red light usually means that there is voltage present, the T120 has a digital readout yes, what value is it showing, could be your socket is still live so be careful.
 
G

Gixxerdan

  • Thread Starter Thread Starter
  • #5
On my fluke the red light usually means that there is voltage present, the T120 has a digital readout yes, what value is it showing, could be your socket is still live so be careful.
It doesn't show any value. Just the red light and a beep. I have just got a multimeter now to double check that it isn't live but I am 95% sure it isn't
 

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