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AR15.COM
3/6/2009 7:26:32 PM EDT
I got a friend at work who says lights are normal until he turns on his deposal.

Flips the disposal switch on, overhead light goes out.
Flips disposal switch back off, light comes back on.

What would you check first?

If I find the light is fluorescent and on the same circuit as the disposal, could the "draw" from the disposal be enough to disrupt the function of the lighting?

Thanks
Tommy
3/6/2009 7:29:37 PM EDT
[#1]
that it's not the light switch
3/6/2009 7:32:30 PM EDT
[#2]
Quoted:
that it's not the light switch



OK OK the switch that turns on the disosal and turns out overhead light is under the sink.


3/6/2009 7:32:31 PM EDT
[#3]
ask him if the switch is a 3-way or a single pole...

a 3-way switch has 3 screws
a single pole switch has 2 screws

possibly a 3-way swich was installed and the hot wire to the light is connected to it.
hard to say without seeing it
3/6/2009 7:35:02 PM EDT
[#4]
I had a similar problem with some wiring once and I called these contractors who specialize in both plumbing and electrical repairs.

Seems like they screwed everything up, however, because now when I turn the light on in the kitchen, water comes out of the light fixture.

What a bunch of fuckin' idiots.

"Larry, Moe, and Curly Repair Service" IIRC.
3/6/2009 7:35:36 PM EDT
[#5]
Quoted:
ask him if the switch is a 3-way or a single pole...

a 3-way switch has 3 screws
a single pole switch has 2 screws

possibly a 3-way swich was installed and the hot wire to the light is connected to it.
hard to say without seeing it



Good obervation...... like you said without seeing it.
3/6/2009 7:42:10 PM EDT
[#6]
light power may run through the disposal switch, and a wire nut is loose, or a loose connection in the switch box making the light loose connection.
3/6/2009 7:43:08 PM EDT
[#7]
Quoted:
ask him if the switch is a 3-way or a single pole...

a 3-way switch has 3 screws
a single pole switch has 2 screws

possibly a 3-way swich was installed and the hot wire to the light is connected to it.
hard to say without seeing it


a 3 way switch wont say off or on the handle is blank, so its easy to see if it is one.
3/7/2009 7:49:22 PM EDT
[#8]
UPDATE


It was just inrush from the disposal.
3/7/2009 8:09:40 PM EDT
[#9]
Quoted:

a 3 way switch wont say off or on the handle is blank, so its easy to see if it is one.


good point

Quoted:
UPDATE


It was just inrush from the disposal.


so does the light come back on eventually with the disposal running? theoretically, inrush is at startup and not continuous.
3/8/2009 9:03:08 AM EDT
[#10]
Quoted:
Quoted:

a 3 way switch wont say off or on the handle is blank, so its easy to see if it is one.


good point

Quoted:
UPDATE


It was just inrush from the disposal.


so does the light come back on eventually with the disposal running? theoretically, inrush is at startup and not continuous.


Yes it just dims until the motor gets to full speed. His description was just misleading.

Thanks for your input.

Tommy
3/8/2009 9:05:16 AM EDT
[#11]
Well, one more mystery solved by the arfcom experts
3/8/2009 1:04:03 PM EDT
[#12]
bb
.