Ralph Mowery wrote:


Nope:


** Fraid it is a yep.

Any mains appliance returns the same current down the neutral
conductor it drew from the active. This mean very little mag field
is generated by the appliance's own lead, assuming the two wires
are closely paired or twisted.



I think you all are compairing apples and oranges.

One is thinking of a 240 volt system with 2 hots and the neutral, whrere
the neutral can have almost any ammount of current on it up to being
equal to what one side of the hot is using (120 volt devices).


** If a 240V load is connected across the two phases, then the current is each wire is the same.

The principle is simple: a current carrying loop that is closed down on itself ( ie the wires are paralleled) or twisted cannot radiate a mag field.


..... Phil