[Antennas] Statement of fact about power system grounds.

Sat Jul 4 18:17:04 EDT 2009

Notice that I said "120/240V" dryers. Appliances that are
purely 240V are fine with 3 prong plugs. They don't need
a neutral. Some stoves are 120/240V and thus need 4 prong
plugs. They don't qualify for the dryer exemption.
David Ring wrote:
> Does that mean that all 240 VAC devices wired with 3 prong plugs also 
> violate the rule?
>> My stove and amplifier are three rong plugs - what is happening 
> differently with a clothes dryer? And where does the "fourth" prong 
> go? Are these new plugs two phases of ac voltage (240 V between them), 
> neutral and ground?

Yes.
Rick N6RK