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Old 01-06-2022, 07:12 PM   #7
DTH
Seasoned Camper
 
Join Date: Apr 2020
Location: Dover
Posts: 52
M.O.C. #26146
The primary purpose is to transfer incoming power between shore power or generator power if generator equipped. This was part of the Legacy package at this time whether a generator set was installed or not. They included the surge guard internal to the switch as an enhancement but that model did not perform reliably.
I agree that an ems is a better approach and used one in addition to the PD switch.
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