Defined was why that damage would happen AND why it would not be a
frequent occurrence. Defined are what all homes have needed since 1970s
and the arrival of transistors in homes. Defined is igniter damage
maybe because your building has a wiring problem.

Lightning or AC utility switching can create a type of transient
that seeks earth ground destructively via transistors. Power on or
powered off - with or without plug-in protectors - that transient may
still seek earth ground via the unswitched wire AND may be outgoing via
gas pipe. Again, is it acceptable to have electric currents flowing
down a gas pipe? And again, this failure would be possible if your
building earthing does not meet post-1990 code AND if you do not have
the 'whole house' protector.

Defined was how damage could have occurred, why building earthing is
so essential (for so many reasons), and why homeowners need a properly
earthed 'whole house' protector. Reread what was posted. Your reply
implies that you did not understand a technical reply that explains how
igniter damage happened. Defined is why a household electrical system
must be inspected, why it might be upgraded, AND why you must inspect
what the utility has installed. All this because you had damage.
Clearly defined was why an igniter could be damaged when switched off.
Please reread the previous post since it is the only post that defines
how your damage could have happened AND defines how you avoid a repeat
of same damage.

You have work to do. Igniter damage may simply be a warning that
human safety problems also exist. Grasp warnings in those previous
posts that also explain why igniter damage could have occurred.

This, your latest reply, implied you misread the previous and
technical post.

sherwindu wrote:
ok, so a ignitor which had worked faithfully for many years up to and shortly before
a power outage, suddenly fails almost immediately after power is restored is just some
kind of wierd coincidence? I don't think so. Like many other devices, the power off
switch does not isolate ALL the circuitry from the outside world.