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Joined: Nov 2005
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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?
Hank
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Joined: Jun 2005
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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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Joined: Nov 2005
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Hank
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Joined: Nov 2005
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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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Joined: Nov 2002
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Mercury switch installed upsidedown?
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Joined: Mar 2005
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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).]
Wood work but can't!
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Joined: Aug 2001
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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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Joined: Feb 2005
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I'd have to agree with Mr. Wise: upside-down mercury quiet switch.
Larry Fine Fine Electric Co. fineelectricco.com
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Joined: Sep 2001
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Could just have been a bad day at the switch manufacturer, and the toggle was installed upside-down...
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Joined: Nov 2005
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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.
Hank
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Posts: 44
Joined: July 2013
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