Neutral spike

Body

Norm,

Since you have performed mass research on this event would you concur
with my long distance observation that the event is not only due to
charge isolation but inclusive of a magnetic connection from source in
addition to the saturated and lifted inductive load?

Your bell buzzer and bell transformer acting as an isolation transformer.

Both motor experiments, the small Emerson type and the HVAC unit with
only two hot's no neutral, must have been powered by an isolation
transformer of some type also such as the utility step down for the
neighborhood or dedicated delta or wye for commercial or even acted as
such from the dual windings of the HVAC motor.

Have you reliably produced the NS from any type of isolated battery
system, or in all such cases was there a magnetic connection to an earth
bonding in another spot?

My thoughts being one side of a transformer acting as a source is
grounded and the secondary side isolated so that the only conceivable
ground bonding on the sink might be considered as magnetic aside from
the bonded motor frame or what not producing the reconnection.

I may be pissing up a rope notwithstanding the NS seems to be predicated
on a B field connection somewhere in the source feed though the neutral
is isolated electrically.

Perhaps this is a simple "Duh" to you that you had already figured out
assuming everyone else at least this smart.  Either way it does create
an interesting position in which to view 3 phase and transformers with
an extra resonant winding.

By the way, ironic your implication that the large medical isolation
transformers create a heretofore unknown vector of extreme danger.

Mick