30amp surge protector on 50amp line

Due to the differences in wiring between a 30 amp cord/plug and a 50 amp cord/plug, you'd best be served getting a 50 amp EMS.

Simple if on 30 amps, running 1 AC, heating something in the Microwave, and the Hot Water Heater kicks on in the AC or Coffee Maker is turned on. You'll pop the 30 amp pole breaker.

Try the 30 amp suppressor for now and see if it will do the job for you.
I see no reason why it should not.

Perfectly OK to use a 30 amp protector with 30 amp supply and 50 amp RV.
Not OK to use 30amp protector with adapter to 50 amp supply to power a 50 amp RV. Protector becomes the fuse.

Get the 50 amp protector. And yes the 50 amp protector can be used on 30 amp supply.

cmarkj wrote:
Without the 2nd AC, I wouldn’t think that the RV would routinely pull more than 30 amps.

All it takes is 3 higher draw devices like: A/C, HW, charger, toaster, coffee pot, hair dryer etc to exceed 30A. Get a 50A EMS.

Better to check if there is a ems in the new digs first.

You can use the 30 amp surge but it needs to feed both legs. Otherwise some circuits may not work.

The RV you had before was 30 amp--the new one will have the same constraints. Microwave (13 amps) and water heater (12 amps) and roof air (16 amps) = overload the pedestal breaker

One other work around is possible--and that would be an inverter charger that has load support.

My choice would be to get a 50 amp ems, not just a surge device.

You can use a 30 amp protector, but that limits you to 30 amp. Sort of defeats the point of having a 50 amp rig
Set yourself up for 50 amps. There is more to having 50 amps than just a 2nd A/C.

Thanks for the input all.

Hummmmmmmmmmmm! Please educate me if incorrect. My understanding of most inline surge protectors is that they protect YOUR electrical system (especially very sensitive electronic components) from externally generated surges (power company or line voltage) not internally generated surges. Your in house fuses and circuit breakers do that.

External surges could be the result of lightning strikes on conductors, transformers, switch gear, or high demand loads which turn on/off outside your system, remote transformers coming on/going off line due to power company (grid) requirements, etc.

Chum lee

fj12ryder wrote:
Due to the differences in wiring between a 30 amp cord/plug and a 50 amp cord/plug, you'd best be served getting a 50 amp EMS.

However you can use a 50-30 adapter and the park's 30 amp outlet.
The wires in the 30 amp Device are not up to 50 amp loads so do not use the park's 50 amp outlet with it.

As Ryder said. I'd up-grade to a 50 amp unit. Then you can either
A: use the one that fits the park outlet or B: use that 50-30 adapter when in a 30 amp only park.

NOTE you need that 50-30 adapter in any case.