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#64278 - 04/03/06 06:49 PM Off is on, On is off, I think?
HCE727 Offline
Member
Registered: 11/11/05
Posts: 186
Loc: Delaware County, PA, USA
I looked at a job the other day where a single pole switch controlled a light. When the switch was in the down position, it said on, but the light did not work. With the switch in the up position, it said off, but the light worked. How is that possible? Does anyone want to take a stab at it?
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#64279 - 04/03/06 06:56 PM Re: Off is on, On is off, I think?
ShockMe77 Offline
Member
Registered: 06/11/05
Posts: 821
Loc: Rahway, New Jersey
If the switch is upside down, in the on position it would say no. And in the off position it'd say ffo. I suggest installing a new switch and install it the correct way. That's what I would do.
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#64280 - 04/03/06 07:01 PM Re: Off is on, On is off, I think?
HCE727 Offline
Member
Registered: 11/11/05
Posts: 186
Loc: Delaware County, PA, USA
That's funny!
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#64281 - 04/03/06 07:28 PM Re: Off is on, On is off, I think?
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 781
Loc: Chicago, Il.
That sounds like it might have been part of a photocell (or other) controlled lighting contactor circuit. I can think of numerous scenarios. I have a nasty habit of taking markers to unlabelled switches, disconnects, Et,c.
Joe
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#64282 - 04/03/06 09:44 PM Re: Off is on, On is off, I think?
wa2ise Offline
Member
Registered: 11/29/02
Posts: 782
Loc: Oradell NJ USA
Mercury switch installed upsidedown?
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#64283 - 04/03/06 11:41 PM Re: Off is on, On is off, I think?
Alan Belson Offline
Member
Registered: 03/23/05
Posts: 1803
Loc: Mayenne N. France
2 way switch miss-wired as single way?

edit, [I just woke up, no coffee yet!]
Alan

[This message has been edited by Alan Belson (edited 04-04-2006).]
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#64284 - 04/04/06 05:35 AM Re: Off is on, On is off, I think?
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
Quote:
2 way switch miss-wired as single way?


American 2-way switches (3-way in U.S. terminology) have unlabeled toggles though.

Only simple 1-way switches have "On" and "Off" marked on the toggle.
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#64285 - 04/04/06 06:35 AM Re: Off is on, On is off, I think?
Larry Fine Offline
Member
Registered: 02/18/05
Posts: 693
Loc: Richmond, VA
I'd have to agree with Mr. Wise: upside-down mercury quiet switch.
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Larry Fine
Fine Electric Co.
fineelectricco.com
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#64286 - 04/04/06 08:26 AM Re: Off is on, On is off, I think?
NJwirenut Offline
Member
Registered: 09/15/01
Posts: 806
Loc: Bergen County, NJ
Could just have been a bad day at the switch manufacturer, and the toggle was installed upside-down...
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#64287 - 04/04/06 12:48 PM Re: Off is on, On is off, I think?
HCE727 Offline
Member
Registered: 11/11/05
Posts: 186
Loc: Delaware County, PA, USA
NJW, you got it right. I went back to do the job that I looked at and had to replace that switch, that's what it was. I should have kept that switch.
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Hank
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