Mains hum
Dave Plowman (News) wrote:
In article ,
wrote:
If you put a voltmeter across the earth and neutral connections you
may find a fairly high voltage exists between them.
One of my sockets has 110 volts across those wires. It varies on other
sockets down to a few volts.
You must have a problem somewhere. This house hasn't got PME, but the
voltage between them measures about 350 mV.
Sounds like the Earth on the affected circuit has become open-circuit
from the Consumer Unit, and another appliance on the same circuit with
normal capacitive filtering is bringing the now-floating 'earth' up to
1/2 mains potential.
--
Ron
|