I use the progressive industry surge protection. The device provides amp draw and availability and will protect the rv against electrical faults.
We also have a power management system that shows current draw and will prevent any devices in the unit from turning on that would overload the available volts. For example the HW heater will shut down if the load will exceed 30 amps. It prevents fuses and posts shutting off.
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moosesuite
2014.0 MS TKSB3
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