[Amps] what is a 4 wire 240VAC service?

[Jim Brown]

On 4/3/2011 7:10 PM, Roger (sub1) wrote:
> Most of those "old appliances" did not generate much if any noise like
> today's with the variable pulse motor speed controls and resident
> computers do.

Very true -- but they WOULD generate hum fields if the ground carries 
current, as it would if a load were connected between hot and ground, or 
if ground and neutral were bonded together within the appliance.

73, Jim K9YC