On Jun 12, 10:03*pm,
(insaneelectic) wrote:
insaneelectic had written this in response tohttp://thestuccocompany.com/maintenance/Re-power-in-circuit-bulb-does...
*:
I actually tested the voltage with the bulb in and the tester between the
white line out of the fixture and the white wire out of the ceiling, and
still got 120V. Is this what you would expect?

If so, what could be the problem here?



You don't measure the voltage with the tester in series with the
load. You measure the voltage across the load. If you measure
voltage in series like you did, you're going to get 120V and the bulb
won't light, because, again, the tester is high impedance.









wrote:
On Jun 12, 9:23=A0pm,
(insaneelectic) wrote:
insaneelectic had written this in response
tohttp://thestuccocompany.com/=
maintenance/Re-power-in-circuit-bulb-does...
=A0:
Wow, thanks for your very helpful response.

Smitty Two wrote:

I have a ridiculous problem with a circuit in my house.
Yer gonna have a ridiculous problem with yo face if you don't
stop
spamming us from your sucko company.

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As Jimmie pointed out, with a high impedance tester you can measure
120V with no load, but that doesn't mean there is still 120V there
when you put the load (bulb) in the circuit. * Imagine you had a 100K
ohm resistor in series with the hot lead. *That could be the case with
a bad connection, switch, etc. * *If you use your high impedance
tester, you will measure 120V at the end of the hot wire. * But put
the bulb there and you will be measuring very little, because the
voltage is now divided between the 100K resistor and the bulb, with
almost all of it being across the resistor, not the bulb.
Try measuring the voltage with the bulb in place and you will likely
find it closer to 0 than 120V.

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