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Jim Adney
 
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Default Safety issue concerning the series light bulb trick

On Fri, 21 Nov 2003 22:24:49 +0100 "Leo Meyer"
wrote:

However, I put the lamp socket into the return wire, not the live wire,
because I want to use differently rated bulbs (quick exchange) and the
socket, if empty, is a great place for children or other innocent people to
poke their fingers in. So, even if the switch is closed connecting the lamp
in-circuit, accidentally touching the fixture should be safe.


If you're working on the device, I think you should be more worried
about a possible hot chassis than a errant finger in an open socket.

I agree with the need to have several light bulbs available, but even
with your switch, you could still leave the light bulb installed.
There's no real reason to remove the bulb just because you've decided
it's safe to bypass it.

In my case, I don't have a bypass switch, I just have a screw-in type
fuse which I install instead of a light bulb.

BTW, with a bulb installed in the hot side of the line, the upper edge
of the base threads will be at least somewhat hot. I was careful to
wire the hot side of the line to the center terminal of the bulb, but
there's still enough juice available at the shell to hurt or even
kill.

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Jim Adney
Madison, WI 53711 USA
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