On Mar 25, 1:43 pm, "Twayne" wrote:
Wow; that's quite a mess of unverifiable and misleading
misinformation! Earth ground is NOT the most critical
protection object. It isn't even necessary for protection from
longitudinal surges, in fact.

From Dr Ronald B Standler in his book "Protection of Electronic
Circuits from Overvoltages":
It should be noted that if the grounding wire is disconnected, an SPD
will provide no protection against common-mode overvoltages. The
grounding conductor is more than a safety feature; it is absolutely
essential for the protection against common-mode overvoltages.

Longitudinal is also called common-mode. Maybe Dr Standler should
consult you? Myths must be better information. Grounding is not
necessary for effective protection? Plug-in protectors without ground
are effective because retail salesmen and hearsay says so.