I had two 30 amp 5th wheels without one from 1997 to 2016 and never had an issue. When we purchase the 5th wheel in 2016 with 50 amp service the first thing I did was install one and the same when we purchase the 2018 TT with 50 amp service.
I install the hardwired PI with remotes.
With 50 amp service, if you loose neutral you put 240V across all your AC equipment, most of which burns out.
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2019 Laredo 225MK for travel. Bighorn 3575el summer home in Washington, Park Model with Arizona Room for winters.
2015 RAM 3500 SRW CC SB Aisin Laramie
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