Forum Discussion

ronphil's avatar
ronphil
Explorer
Jan 15, 2014

EMS vs. Voltage Protector vs. Surge Protector

We have a 2002 HR with an in-house EMS. Is the EMS also known as a voltage regulator? That is, will it shut down my electrical system with too low or too high voltage? I'm aware it will prioritize systems when needed, but nothing in the manual indicates a shut down feature. Also, is it necessary to have a surge protector with the EMS? How large. The park where we are staying is having electrical issues with surging.
  • ronphil's avatar
    ronphil
    Explorer
    Jan 15, 2014
    Thanks, Bob. HW50C available just on-line or carried at RV stores?
  • CA_Traveler's avatar
    CA_Traveler
    Explorer III
    Jan 15, 2014
    You're referring to load shedding which reduces loads but most don't otherwise protect against anything.

    My EMS does the same thing. My Progressive Industries HW50C protects against high/low voltage and frequency, miswired plugs, surge and several other faults. These units are often called EMS or surge protectors but a better description is full function power protection.

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