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#1729 - 05/23/01 11:15 AM low voltage  
mechcmdr  Offline
Junior Member
Joined: May 2001
Posts: 2
I have a hallway light that won't turn on. When I took a reading I have only 48V at the switch when I should have 120V, of course. It's probably something simple, but to someone who don't know. Any Ideas?


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#1730 - 05/23/01 02:03 PM Re: low voltage  
Anonymous
Unregistered

>I have a hallway light that won't turn on. When I took a reading I have only 48V at the switch
It's wired to your phone line instead of your electric line.


#1731 - 05/23/01 03:28 PM Re: low voltage  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,306
mechcmdr;
do you mean you have 120V going into, and 48V coming out of(to the light) the switch?

if so can the switch...

Dspark,
if that were true, he could dial his own number for some lights!
[Linked Image]


#1732 - 05/23/01 03:35 PM Re: low voltage  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
mechcmdr,

Where are you putting the test leads when you get 48v?

Bill


#1733 - 05/23/01 03:40 PM Re: low voltage  
Anonymous
Unregistered

>do you mean you have 120V going into, and 48V coming out of(to the light) the switch?
If that were true, wouldn't the light at least be glowing yellow?

Bill is onto something about lead placement.
Is something else running on the circuit that is working?

I would measure DC voltage and see whether it is -48. If so, it's a phone line.

My recommendation is to replace the bulb (with 60 watts or less, of course).


[This message has been edited by Dspark (edited 05-23-2001).]


#1734 - 05/23/01 04:55 PM Re: low voltage  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
mechcmdr,
What type of meter are you using?
Don(resqcapt19)


Don(resqcapt19)

#1735 - 05/26/01 12:13 AM Re: low voltage  
mechcmdr  Offline
Junior Member
Joined: May 2001
Posts: 2
I took the reading across the hot and common on the switch. I'm using a Wavetek volt/ohm meter. So I am guessing I have 48V coming to the switch. I took a reading on a few of the other light swithches in the house for reference and I got 120V on them and of course I get 0V when I turn on the light. And no, It's not phone wire.


#1736 - 05/26/01 01:00 AM Re: low voltage  
Anonymous
Unregistered

>I took the reading across the hot and common on the switch.

That won't necessarily work.

You need to measure between the line and a ground.

It sounds like perhaps an open neutral on the circuit.

Your problem is NOT low voltage.


[This message has been edited by Dspark (edited 05-26-2001).]


#1737 - 05/26/01 07:45 AM Re: low voltage  
C.Urch  Offline
Member
Joined: May 2001
Posts: 36
Kill Devil Hills, NC USA
Like DSPARK says, you need to read between the common and ground. Sounds like it is a 3-way switch which may have gone bad.



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