RE: mindless question: measuring mot voltage.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Steve Conner by way of Terry Fritz <teslalist-at-qwest-dot-net>" <steve.conner-at-optosci-dot-com>

Some HV probes have a very high resistance and can act like an antenna
picking up AC voltage even if not connected to anything.

Safety note: An HV probe has two test leads, a high voltage and a ground
one. The high voltage lead goes through the resistor chain, but the ground
lead connects straight to the (-) terminal of your DMM.

Therefore it goes without saying that you need to either: Make sure the
terminal you clip the ground lead to is genuinely ground, or: Put the meter
on an insulating surface and don't go near it or the probe while the HV is
on.

Steve C.

 >the high voltage probe got knocked off the one side of the test gap.
 >THE METER STILL READ THE SAME VOLTAGE.
 >with or with out the hv probe connected to the test gap, same voltage.