30 or 50 AMP surge protector

My booster is wired inside the cord compartment.

pianotuna wrote:
I would go with an autoformer, which includes surge instead of just a surge device. Low voltage kills far more than high voltage surge.

I was recently told that some CGs are banning Autoformers, if they see you using one.

Lyle

If you are melting plugs then the voltage may be too low. I've not had that happen to any plugs "south" of the autoformer since I started using it.

My comfort zone is 107 volts and above. YMMV

pianotuna wrote:
The low voltage cut out on the PI is 104 volts. Damage to motors may start at 107 volts.

I have always seen the motors rated 115 volts +- 10% or 103.5 to 126.5

WTP-GC wrote:

pianotuna wrote:
I would go with an autoformer, which includes surge instead of just a surge device. Low voltage kills far more than high voltage surge.

If you get an actual EMS unit, it will protect from surge and low voltage. I highly recommend the Progressive Industries hard-wired version.

The low voltage cut out on the PI is 104 volts. Damage to motors may start at 107 volts.

Having no power due to a low voltage disconnect does not appeal to me at 37 c (98.6).

My particular autoformer allows me to operate safely at a shore voltage of 90. It has 3 layers of boost (110, 100, 90) and one of buck (134). I have "tweaked" those numbers to have the first boost at 113.

I have added better surge than the PI unit.

Lwiddis wrote:
An autoformer with surge protection, as pianotuna suggested, is a better way IMO.

With an EMS, low voltage will require that you pack up and go home if the voltage is low. This will help the shortage of campsites issue.

pianotuna wrote:
I would go with an autoformer, which includes surge instead of just a surge device. Low voltage kills far more than high voltage surge.

If you get an actual EMS unit, it will protect from surge and low voltage. I highly recommend the Progressive Industries hard-wired version. A little more effort to install, but far more convenient from there on.

Yes, match your unit with the rating of your camper. Our camper is a 50A setup, though it rarely ever pulls more than about 25-30 amps. We have a 50A hard-wired EMS.

An autoformer with surge protection, as pianotuna suggested, is a better way IMO.

Like said, if your RV is 50 amp, get a 50 amp unit. It will work on 30 amp with an adapter.

Best unit to get is the Progressive Industries EMS, to protect your trailer. The cheap surge only units are no much use. The EMS units monitor the power voltage for high and low as well as the frequency and surge protection.

I like the hard wired unit mounted in the RV with the remote read out pannel,
https://www.progressiveindustries.net/ems-lchw50

RockyMt wrote:
I have a 50amp trailer and a 50 amp protector, when plugged into 30amp I get a fault.

What is the fault? Best to have the error fixed.

For the OP get full EMS protection not just the lowest cost unit with only surge protection. And +1 to get a unit that matches your RV power.