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Old 09-12-2014, 08:47 AM   #21
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Reply to Hitch Pin
EMS = Electrical Management System

Reply to general thread content:
I had a fifth wheel without an EMS for ten years and never had a power problem - that I knew about.

I've had an EMS for about four years and it has protected my trailer on several occasions:
1) Stopped the flow of electricity to my trailer when the voltage was less than 104 volts, protecting my AC compressor (several occasions)
2) Stopped the flow of electricity to my trailer when the voltage was over 132 volts, protecting sensitive electronics (one occasion)
3) Protection from unknown surges

Nobody has too have an EMS. The electrical systems on a trailer seem to be rather robust. But an EMS does provide an additional level of protection.
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Old 09-12-2014, 09:12 AM   #22
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Originally Posted by RDUBYA448 View Post
While the park may have posted the standard, innocuous "Not resposnsible" warning, these, as a rule, hold no water in the legal world. So, either the insurance company, or his lawyer will be seeking reimburement for damages paid if it's confirmed that the surge was caused by negligence on the part of the park! And, if he had replacement cost on his RV policy, he is indeed getting all new appliances, wiring, etc. for the cost of his deductbile!
In the meantime your trip is ruined.. if you enjoy staying in a hotel you would not be in an RV..
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Old 09-12-2014, 09:22 AM   #23
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I picked up one of these a few weeks ago.
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Old 09-12-2014, 10:14 AM   #24
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That looks interesting, Hitch Pin. What is it?
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Old 09-12-2014, 10:15 AM   #25
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That looks interesting, Hitch Pin. What is it?
+1. What is that thing?
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Old 09-12-2014, 10:38 AM   #26
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To use surge protection or not.....another of the topics where opinions vary greatly.

My DW and I researched this quite a lot and we can't imagine that investing $250 or so in our Progressive Industries PT30C is a bad thing, especially considering what we invested in our TT/TV package as a whole, and considering what replacement appliances cost.

To each his own.

Cheers,
Greg
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Old 09-12-2014, 10:42 AM   #27
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That looks interesting, Hitch Pin. What is it?
it is an "auto former" unlike the others that cut the supply of electricity off if you get low voltage this will boost the voltage and keep things running
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Old 09-12-2014, 11:53 AM   #28
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it is an "auto former" unlike the others that cut the supply of electricity off if you get low voltage this will boost the voltage and keep things running
How does that work? Is it rechargeable? Does it get voltage from the battery? Where does it get the voltage to "boost"?
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Old 09-12-2014, 12:15 PM   #29
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How does that work? Is it rechargeable? Does it get voltage from the battery? Where does it get the voltage to "boost"?
This is the info from their site:

"Autoformer provides protection from low voltage damage by boosting the park voltage to your RV. "Sense" circuit automatically turns the 10% boost on when the park power is less than 117 volts and turns it off when the park power reaches 118 volts. Built in grounding continuity test offers protection against damage from open ground, open neutral or reverse polarity - if the light isn't on, do not use the power source."
https://www.hughesautoformers.com/in...d=2&Itemid=170
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Old 09-12-2014, 12:19 PM   #30
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How does that work? Is it rechargeable? Does it get voltage from the battery? Where does it get the voltage to "boost"?
it has windings in it just like a transformer to produce voltage. look up Faradays law
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