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Re: An odd question for electricians or physicists!
Originally Posted by steve`o
(Post 5152116)
i`m going for the induced voltage route as they are wired on a two way circuit you have a live cable running parallel to the switch wire
is the cable twin and earth, twin with a separate earth, singles with an earth or no earth at all??? It sounds suspiciously like it could be an induced current to me. I guess the wires don't happen to be moving through a magnetic field do they? Or sited in a changing magnetic field of any description? Is there any possibility of RF interference generating an EMF in the wiring? S |
Re: An odd question for electricians or physicists!
Originally Posted by Swerv-o
(Post 5152829)
It sounds suspiciously like it could be an induced current to me. I guess the wires don't happen to be moving through a magnetic field do they? Or sited in a changing magnetic field of any description?
Is there any possibility of RF interference generating an EMF in the wiring? S ( this is common where you have a redundant unearthed cable in a multicore ) regardssteve |
Re: An odd question for electricians or physicists!
Originally Posted by steve`o
(Post 5152884)
if you energize one side of a twin wire without an earth you will get an induced voltage in the other cable as the rotating magnetic flux in the live cable is in effect being "cut" by its twin
( this is common where you have a redundant unearthed cable in a multicore ) This makes a change to discussing the wiring of plugs... S |
Re: An odd question for electricians or physicists!
Wol;
if there is a Neutral fault on the main switchboard thats could also be a possible cause also due to the MEN if the place either side of you also has a neutral fault you may be picking up fault currents from the supply worth having it checked out. Make sure your earthing is good with an Earth Rod driven in the ground. DONT disconnect any bare earth wires EVER at the switchboard |
Re: An odd question for electricians or physicists!
Hi Arthur
If there was a neutral fault, more of the lights would be lighting up dimly anyway, most electronic stuff you play up also, Could it be something simple like a faulty switch breaking down ??? Keep things simple get the place tested. Regards Martin |
Re: An odd question for electricians or physicists!
martin4414;
your right regarding the Neutral more lights would be affected, the only thing i can think of maybe the light switch is faulty may i ask is there an earth connection present if NOT then there may be a problem with parallel faults in some conductors. |
Re: An odd question for electricians or physicists!
The 5 lights are in two sets separately switched: 2 on one and 3 on the other switch: each set are two-way switches.
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Re: An odd question for electricians or physicists!
Originally Posted by Wol
(Post 5172078)
The 5 lights are in two sets separately switched: 2 on one and 3 on the other switch: each set are two-way switches.
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Re: An odd question for electricians or physicists!
Originally Posted by steve`o
(Post 5174018)
do both circuits pulse at the same rate ??
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Re: An odd question for electricians or physicists!
Originally Posted by Wol
(Post 5174142)
Approximately: it's actually quite difficult to see since the effect is so dim. You have to be looking through peripheral vision to make out the blinks, in pitch darkness. They come about every 12 - 15 seconds and aren't synchronised so I guess the answer is a very slight voltage in a wire for some reason.
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