On 10/26/2015 2:31 PM, westom wrote:
On Monday, October 26, 2015 at 12:55:46 PM UTC-4, wrote:
When the power comes back on, particularly in those storm situations
where the power never really goes "out" but the lights blink - THAT is
when you get real "surges" - not to confused with the high amperage
high voltage "spikes" created by lightning. They can damage sensitive
electronics over time.

Surge is a subjective term used to describe low voltages, low currents, high voltages,
radio frequency noise, and low voltages.

"Surge" is a well defined term.

That type surge is already made irrelevant by what is inside appliances

Equipment may or may not have surge protection.

No protector claims to or will even discuss this 'surge' that is irrelevant to the topic.

Nonsense.
The IEEE and NIST surge guides both include surges caused by lightning
and say plug-in protectors are effective.
Some plug-in protectors even have protected equipment warranties, which
include lightning created surges.


If inductive loads are creating surges on AC mains, then AC power switching off 120
times a second is also creating surges.

Maybe you haven't heard - AC mains are sine wave. Maybe of AC mains were
square wave....

An example of a surge created by line, and other, inductance is a fault
cleared by a utility fuse in the field. When the fault current is
interrupted the magnetic field created by the fault current collapses
and can create a damaging surge.

Switching of devices inside a home is very unlikely to cause damage.


What happens when that type anomaly occurs? Depends on numbers. Some are so short that no electthat electronics simply power off - then restart. In both cases without any hardware damage.

There can be damage. Probably more likely on power interrupt than restore.


This anomaly could be a problem especially with electronics in the 1950s and 60s when hardware was not as robust.

You think vacuum tubes are sensitive to surges?