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Actually there are two entirely different items. There are EMS (Energy Management Systems) which control power loads to avoid tripping breakers when multiple appliances are going through peak load at startup. An EMS can also set priorities to establish which appliances run when there multiple one are competing for resources. Then there are ATS (Automatic Transfer Switches) which control the transfer or hand off (so to speak) of power from generator to shore power or vice versa as the situation warrants. Normally these have a time delay so you can avoid an overload situation resulting from multiple sources being used at the same time.
No all coaches come with an EMS, however, if a generator is installed all coaches should have an ATS.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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