Answer / thowsif_emerson

single-throw" (SPST) (the simplest type, "on or off")
or "single-pole, double-throw" (SPDT), connecting either of
two terminals to the common terminal. In electrical power
wiring (i.e. House and building wiring by electricians)
names generally involving the suffixed word "-way" are
used; however, these terms differ between British and
American English and the terms two way and three way are
used in both with different meanings.

It is a Switch r what????

While testing a ZCT what parameters have to check or measure?

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