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M.Joshi

Quote:

Originally Posted by Dave Plowman (News)

In article ,
M.Joshi wrote:
Dave, Could you expand a bit more on what you mean by "unbalances the
line and neutral." please?

In the UK, neutral is connected to earth at some point - the last possible
one being at the incoming main. After that, they are separate. Use the
earth cable in the house as a return and you are now not drawing equal
current on line and neutral. And RCDs work by looking for a difference in
the current flow between line and neutral, so you don't want to impose a
load which does just that. Of course, if it's only a couple of milliamps
it's unlikely to matter, but in principle it's a bad idea.

--
*Cover me. I'm changing lanes.

Dave Plowman London SW
To e-mail, change noise into sound.

We currently do not have RCDs installed at the fuse box - they are plain wire fuses.

James Sweet mentioned in an earlier post, using a rechargeable battery or memory backup capacitor to power it and "steal" power to charge the battery
when the switch is off.

How would this work with no neutral? I am assuming a large wattage resistor would be required to drop the voltage to a suitable level and using the earth as a neutral? However, I don't think there will be enough space behind the switch plate for the resistor?