Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Peter on January 13, 2022, 03:31:58 pm

Title: Shore power and generator
Post by: Peter on January 13, 2022, 03:31:58 pm
 Can you, or is it advisable, to have the shore power plugged in while running the  generator? My negative connection on the battery charger for the start batteries came off so they are currently weak and now re connected and charging from the shore power. At the same time I have the generator and the AH running to "exercise" them. Advisable or not?
Peter
Title: Re: Shore power and generator
Post by: WS6_Keith on January 13, 2022, 03:34:22 pm
I have no specific knowledge here, but my understanding is that the automatic transfer switch box has a priority relay.  Some coaches may have generator priority and others shore power priority.  This tells me it will not connect both at the same time, only the one that is powered up and has priority. 
Title: Re: Shore power and generator
Post by: Peter on January 13, 2022, 03:37:50 pm
Thanks for the comment. Usually I unplug the shore power and then start the gen. I then usually hear a click from the bed pedestal indicating the gen was taking over power. I did not hear that click this time
Title: Re: Shore power and generator
Post by: oldguy on January 13, 2022, 03:55:15 pm
My coach has shore power the priority.
Title: Re: Shore power and generator
Post by: OldScout on January 13, 2022, 05:43:28 pm
Usually, the genset has priority within the auto transfer switch [ATS], so anytime the genset is running, shore power will be disconnected and wont [click] transfer over if you plug into a pedestal.  If you are plugged in and on shore power and start the genset the ATS will transfer to genset anyway.  Also believe genset priority makes more sense with regard to how auto genset start function work.  As an aside, most surge protectors have a delay built in to analyze either shore power or genset or both, depending on how ATS is wired.  This delay could take several minutes. 
Title: Re: Shore power and generator
Post by: Peter on January 13, 2022, 06:00:50 pm
Yes I notice there is a delay in the click when the shore power is disconnected,and the gen set is then started. The click seems to come form the engine pedestal inside below the bed. Where would a surge protector be located in the system if there is one there already?
Title: Re: Shore power and generator
Post by: Jan & Richard on January 13, 2022, 06:11:59 pm
Usually, the genset has priority within the auto transfer switch [ATS],
Also believe genset priority makes more sense

My coach is like "Oldguy's"coach as the shore power has priority over the generator. 
I agree that the other way around makes more sense.

Richard
Title: Re: Shore power and generator
Post by: craneman on January 13, 2022, 06:17:19 pm
Mine is generator priority but I am the 3rd owner so not sure if is factory.