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Old 07-26-2011, 06:24 PM   #15
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I will second that, 50 amp surge guards work fine on 30 amps with the proper adapters.

In fact they work BETTER on 30 amps (At least one feature) since they are designed to handle the higher 50 amp load..

We call them surge protectors, and the RV type really do perform that function, as if there is a true surge (Sustained high voltage) or a sustained anti-surge (low voltage) they will cut you off to protect you.

They also perform something called SPIKE supression, spikes are short term (often less than 1/60th of a second) increases in voltage.. This, a 50 amp can do better than a 30 cause it has bigger MOV's (Metal Oxcide Varisistors, the magic spike clipper)

Surge strips (The ones with six outlets and a 15 amp plug) do nothing to protect you from a genuien Surge,, they do clip spikes though.
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Old 07-27-2011, 05:53 AM   #16
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i have a progressive industries portable 50 amp surge protector. it cost about $100 in 2007.
this surge protector also checks the power pedestal before you connect your rv.
recently this surge protector caught an open neutral problem with a pedestal in a cg. this could have cost us grief and many dollars if we had hooked up to this pedestal not knowing about the open neutral problem.

http://www.progressiveindustries.net/ssp_50.htm
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Old 07-27-2011, 10:48 AM   #17
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I also use a 50 to 30 dogbone at the pedestal. Before I hook up, I plug another adapter in that goes from 30 to a residential 15 amp socket and have one of those simple circuit checker things with the colored lamps, so I know the pedestal is wired correctly before plugging the RV's umbilical into the dogbone.
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Old 07-27-2011, 11:06 AM   #18
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50 amp surg protectors aren"t cheap, same with the 50-30 pigtails, But WELL WORTH the price. A small voltage spike can take out multiple circuit boards in RV appliances. (Real Expensive repairs) They also indicate that the Shore power pedastal is corrected wired.
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Old 07-27-2011, 11:09 AM   #19
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So in trying to wade through this, I have a 30 amp rig, I plug into a 50 amp because I have no choice sometime. Do I need anything in between? I do have a surge protector.)
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Old 07-27-2011, 11:23 AM   #20
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sciguy6 welcome to irv2.
Your fine with the SP in your line, some times I have to use a 50 amp dog-bone adapter into 30 amp outlet at campground pedestal, have SP also.
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Old 07-27-2011, 11:28 AM   #21
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Quote:
Originally Posted by rsaint View Post
I would always say buy a 50 amp surg protector. If you have a 30amp RV now and enjoy it! You will someday need a 50amp as you move up in coach size. Learned it the hardway..... When you get a coach with 50 amp your 30 amp is no good. You can use your 50amp surge with a 30 amp coach with the simple adapter...
Welcome rsaint to irv2.
Come join the Newmar forum members on forum, plenty of info and access to COM_NET to find more info about your coach.
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Old 07-27-2011, 07:02 PM   #22
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Quote:
Originally Posted by sciguy6 View Post
So in trying to wade through this, I have a 30 amp rig, I plug into a 50 amp because I have no choice sometime. Do I need anything in between? I do have a surge protector.)
You need to get a "dogbone" with a 30A female end and a 50A male end so you can plug your 30A cord into the 50A outlet.
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