Forum Discussion

maddog1927's avatar
maddog1927
Explorer
Mar 29, 2015

Coil in Transfer Switch energized extended periods?

Looking to do an inverter install and would like to double up on my transfer switches, but I'm concerned because the way I'd like to do it would make it so that the coils in the added transfer switch ...
wa8yxm's avatar
wa8yxm
Explorer III
Mar 29, 2015
There are two types of solenoid type relays.

Starter Solenoids used for the engine are designed for no more than 30-60 seconds of continuous operation.

AUTO Transfer relays are designed to be engaged no more than 25 hours in any single day.. Since in 24 hours it will be a new day.. that means 100% of the time if so reqauired...

We often read about transfer switches that hum.... This is a type that has one set of coils live on shore power and another live on generator.

They are designed for continous duty.

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