| [GMCnet] Interesting observation [message #162318] |
Mon, 05 March 2012 22:44  |
Gerald Work
Messages: 102
Registered: June 2010
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After installing some led rope lights to replace older incandescent rope lights I added a power strip to get an on/off switch to control them. When turned off we could still see a bit of light being emitted. Where did that come from? Well, it turns out that the on/off switch on a power strip does not necessarily turn the thing all the way off! On two of the three I measured today when off I could still measure 9 to 11 vac!!!! Does that mean America is wasting 10% of all the power directed through power strips or do I just have the only two that operate that way? I plan to measure a bunch in the next hardware store I go into.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
Http://jerrywork.com
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| Re: [GMCnet] Interesting observation [message #162331 is a reply to message #162318] |
Tue, 06 March 2012 07:55  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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I have some LED Christmas lights that glow when they are turned OFF.
LED's will glow with very little current. My lights are switched through an Insteon controlled receptacle so there could be some leakage in the order of microamps through some capacitance.
All switches have parasitic capacitance when turned off. The wider the contacts and the closer they are in the OFF position, the higher the parasitic capacitance.
You could use a small incandescence bulb to shut the leakage current. Or find a switch with less capacitance.
Actually 3 way switch circuits can be bad for this because the wire running between the 3 way switches acts like a big capacitor.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
[Updated on: Tue, 06 March 2012 11:10] Report message to a moderator |
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| Re: [GMCnet] Interesting observation [message #162333 is a reply to message #162319] |
Tue, 06 March 2012 09:44 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
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Gene
I don't know what experience you have had but...
I agree, the MOV protection can leak as it is directly connected to the outlet contacts.
However, the CB and I assume the overload protection should not leak through the switch.
Now that I have stated my experience of the past, I will say that I have had some interesting results with leakage when the outlet that the strip is plugged into is not wired "normally"... IE.. hot wired to neutral and vise versa or hot wired to ground. Also, if the ground to the land source is not a good connection, the neutral can leak.
We all assume neutral to be at zero volts but in electronics, neutral can be determined at any voltage depending on the circuit charactoristics.
I was thinking the same thing however when you suggested he may have a protected ( MOV ) outlet with a switch on it. They are connected to all connections of the outlet and can leak.
None the less, the fix will be easy for this problem.
Just my bable
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
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| Re: [GMCnet] Interesting observation [message #162340 is a reply to message #162318] |
Tue, 06 March 2012 11:10 |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma: -4
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Mine do too. X10 controller. Looks kinda cool, though, that dim glow
over the arches.
RonC
On Tue, 06 Mar 2012 07:55:09 -0600 Bruce Hislop <bruce@perthcomm.com>
writes:
I have some LED Christmas lights that glow when they are turned
OFF.
LED's will glow with very little current. My lights are switched through
an Insteon controlled receptacle so there could be some leakage in the
order of microamps through some capacitance.
Bruce
Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
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Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
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| Re: [GMCnet] Interesting observation [message #162342 is a reply to message #162318] |
Tue, 06 March 2012 11:51 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
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| Gerald Work wrote on Mon, 05 March 2012 21:44 |
After installing some led rope lights to replace older incandescent rope lights I added a power strip to get an on/off switch to control them. When turned off we could still see a bit of light being emitted. Where did that come from? Well, it turns out that the on/off switch on a power strip does not necessarily turn the thing all the way off! On two of the three I measured today when off I could still measure 9 to 11 vac!!!! Does that mean America is wasting 10% of all the power directed through power strips or do I just have the only two that operate that way? I plan to measure a bunch in the next hardware store I go into.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
Http://jerrywork.com
Does the strip have an on/off light on it?
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Bob de Kruyff
78 Eleganza
Chandler, AZ
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