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Old 11-12-2009, 07:39 PM   #15
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Progressive Industries Electrical Managment System (EMS-PT30C)
Does anyone know if there is a model that can be mounted inside so you don't have to worry about plugging it up each time and "losing" it in a campground?

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Old 11-13-2009, 12:26 AM   #16
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Hi, I bought a 30 Amp in line surge protector from Camping World a few years ago. I plannned to use it if we ever camped in an area having lightning storms. So far I haven't even taken it out of the box, but I still carry it with me everywhere I go. I have the three light polarity tester plugged into my trailer in the kitchen area; This is the first thing I look at when connecting to shore power. I also have the "Kill-A-Watt" plugged into a kitchen outlet; I keep an eye on voltage, mostly, and check for 60 Hz. I think the surge protector was about $80.00 and if nothing else I would buy one just in case. A friend of mine showed me part of his [melted] after some sort of campground problem. It saved his motorhome.


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Old 11-13-2009, 04:32 AM   #17
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couple of thoughts.

leave your protectors outside of the trailer. they have movs in them (metal oxide varistors) they will literally explode and burn if hit by lightning or are exposed to primary 4000 and above volts. don't set your trailer on fire or expose yourself to the possible shrapnel.

the only other possible advantage to using one of the automated units is if the campground loses it's neutral connection to the pedistal you are plugged into. when the neutral is disconnected your trailer will experience 200+ volts on the high resistance equipment (the expensive stuff} and low voltage on the low resistance stuff (the cheap stuff like motors and heating elements)

you call them ferrets, i call them weasels.
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Old 11-13-2009, 08:08 AM   #18
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Originally Posted by tslanier View Post
Progressive Industries Electrical Managment System (EMS-PT30C)
Does anyone know if there is a model that can be mounted inside so you don't have to worry about plugging it up each time and "losing" it in a campground?
tslanier....Progressive does make a 30 amp hard wired device model # EMS LCHW30, with protection similar to the plug in EMS-PT30C.
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Old 11-13-2009, 08:36 AM   #19
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I too have a Progressive Industries Electrical Management System hard wired into our trailer and have used it for about 5 years. I have been very happy as it has stopped bad electricity (high, low, reverse polarity) getting to our appliances and possibly damaging them. Given we were going to Mexico and expecting low voltage I also bought the Hughes Autoformer to boost low voltage. That worked well except we also had almost as many cases of high voltage and despite lots of suggestions of adding extension cords to reduce the voltage - and we used many - that did not work with the result we had to go without electric and resorted to our inverter so I could use the printer, etc.
I recently contacted Progressive to see if a separate surge protector placed at the campground electrical outlet would be necessary and they replied no. The only thing I do not like about the Huges Autoformer is it does not have a reset button so if the surge portion of the system gets fried you have to send the unit back to Huges. And, I still have not figure how to lower very high voltage other than buying another very expensive system.
Finally, some have said low voltage will not harm motors, etc; however, most professionals say exactly the opposite and that is why the PIEMS and other equipment was designed - better safe than sorry.
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Old 11-13-2009, 09:17 AM   #20
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On a side note, if you're just concerned about small things like your stereo or a computer, many UPS batteries have built in surge, and even brownout protection. The brownouts and power blips will often do more damage to your equipment than the rare lightning strikes.

Besides, when the battery goes out you can turn it into a 12v to 110 converter.
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Old 11-13-2009, 01:57 PM   #21
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I noticed the volltage at the parks
to be against low
voltage damage sounds good to me.

For lightning storms...I unplug for awhile
till the storm passes

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