To my knowledge no RV's come with an EMS installed. There is a company using the letters EMS but they are installing a load sheading system. Complete different thing. There are 3 things on the market as far as protection goes.
Surge protector. It is just that protecs for high electric surge and nothing more. It is a one hit wonder. It works one time and self distructs.
EMS. protects from high and low voltage. Will nor let voltage thru if the source is not correct.
Hughes Autotrans boost low voltage 10%
Hughes auto trans in front of EMS is the best protection.
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2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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