Surge protector

WayneAt63044 wrote:
So far all the responses are from folks who recommend using such. In 30 years of RVing around the country I never needed one. Ran into a few pedestals that were worn or had no ground but never a major issue that put my trailer or contents at risk. A surge protector will not survive a direct lightning strike as it just isn't stout enough to handle all the Joules in a lightning bolt. Check with an independent electrician for perhaps a different opinion from those who sell power protection. Do you have such for your whole house? Have you needed it?

Ours has helped us around a dozen times. most were open ground, which by itself isn't a huge issue.

However it has tripped on low voltage several times. when the line voltage dropped to <100V, low enough to be a big issue with an AC.

as for whole house, not the same issue. House is not going one day have reversed hot/neutral and be correct the next day. Nor is it going to have 240V to 110 outlets one day and not the next. And is way less likely to have low voltage or high voltage.

But the above can and do happen at campground pedestals.

Surge. well yes it can have that

I want everyone to know that I really appreciate everyone’s comments. I have decided to purchase a EMS-PT30-X. Thanks again for all the comments

So far all the responses are from folks who recommend using such. In 30 years of RVing around the country I never needed one. Ran into a few pedestals that were worn or had no ground but never a major issue that put my trailer or contents at risk. A surge protector will not survive a direct lightning strike as it just isn't stout enough to handle all the Joules in a lightning bolt. Check with an independent electrician for perhaps a different opinion from those who sell power protection. Do you have such for your whole house? Have you needed it?

elm3420 wrote:
I am looking to possibly buy one that plugs into the shore power outside.

I've been using this one for several years and it has served me well.

CA Traveler wrote:
The PI HW50C has a bypass switch on the remote, but then no protection!

a) as long as one remembers to turn it back one when done. (Likely I'd forget
b) bonding plug is quick and easy and can be left on the generator
c) and must remember to turn the bypass switch on.

But all that said, a few times I did forget my bonding plug and the bypass switch is then handy.

Chances of a fault with most generators is way less than a problem with the pedestal power plug, but still not zero.

CA Traveler wrote:
The PI HW50C has a bypass switch on the remote, but then no protection!

The Ground/Neutral bond plug can be made for $3, or bought for $10. Keep the protection. Generators CAN fail. (After the warranty expired, I opened my inverter generator and bonded the back of the receptacle itself.)

The PI HW50C has a bypass switch on the remote, but then no protection!

to the OP

one thing to know. If the EMS won't allow power if it finds an open ground, and you are trying to power the trailer from an external generator the EMS likely won't apply power. Most portable generators don't have a ground/neutral bond, so ground looks open. you will need to either (a) disconnect or bypass the EMS or(b) make a grounding plug for the generator. an "empty" plug where internally ground and neutral are tied together and the plug put into one of the generator outlets.

Huge advantage to the PI HW50C is the inside remote display and field replaceable parts. Continuous display of volts and amps plus 11 faults. No need to go outside and stare at the pedestal.

Installed in prior MH in 2004 and one month later shut down the rig with 160V. No issues in 19 years.

Go with hard wired. No messing around with pedestal and chance of theft.


Progressive EMS-HW50C here.


C.B.