They don’t measure the ground voltage at all and will keep supplying power. And there’s enough nuisance GFCI tripping already. The hope is that GMI (Ground Monitor Interrupter) will help.
And be aware that even if the GFCI trips, it won’t disconnect your RV chassis from an incoming hot-ground. Even shutting off your pedestal breakers won’t stop it. You have to unplug from shore power.
Most of our RV’s today have GFCI that protects several receptacles in our RV. How do these GFCI behave when there is a deadly Hot Skin voltage (30V or higher) on an RV? Do the trip? Giving an indication something electrical is at fault? Or do they just happily keep supplying electrical power on all the receptacles they are protecting? Clearly, they should trip on a current imbalance of the circuit they are protecting. But what about out-of-balance current coming into the RV where the ground has a deadly voltage already applied?
And maybe electric hot water heaters should be protected by a GFCI to prevent some hot skin conditions where RV park electrical ground maintenance is lacking and heating elements fail.
They don’t measure the ground voltage at all and will keep supplying power. And there’s enough nuisance GFCI tripping already. The hope is that GMI (Ground Monitor Interrupter) will help.
And be aware that even if the GFCI trips, it won’t disconnect your RV chassis from an incoming hot-ground. Even shutting off your pedestal breakers won’t stop it. You have to unplug from shore power.
Most of our RV’s today have GFCI that protects several receptacles in our RV. How do these GFCI behave when there is a deadly Hot Skin voltage (30V or higher) on an RV? Do the trip? Giving an indication something electrical is at fault? Or do they just happily keep supplying electrical power on all the receptacles they are protecting? Clearly, they should trip on a current imbalance of the circuit they are protecting. But what about out-of-balance current coming into the RV where the ground has a deadly voltage already applied?
And maybe electric hot water heaters should be protected by a GFCI to prevent some hot skin conditions where RV park electrical ground maintenance is lacking and heating elements fail.