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Old 10-26-2012, 07:31 PM   #1
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Surge protector needed?

Do I really need to buy a 30 amp and 50 amp
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Old 10-26-2012, 07:55 PM   #2
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Quote:
Originally Posted by cdrdevine View Post
Do I really need to buy a 30 amp and 50 amp


What are you talking about?
A surge protector is designed for lightning strikes and high voltages.
You may be tallking about a plug in that will drop out when voltage i the parj gets too high or too low then yes. Oh most of these devices also have surge protection for lightning strikes.

You can get away with not buying one but if you plug into a pedestal that has loose or worn plug it can cause problems. Also if you go to parks in mid summer when everyone has their AC on the voltage may be low which can cause problems.

The biggest and most expensive device that can be damaged is the refrigerator control board and that is a few hundred bucks.

Most people spend a few hundred on something like this.
If you have a 30 amp plug on your RV the get a 30 amp.

Portable Surge Guards With LCD Display - Product - Camping World


This is what I use in my motorhome
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Old 10-26-2012, 08:06 PM   #3
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Originally Posted by cdrdevine View Post
Do I really need to buy a 30 amp and 50 amp
No you don't "really need" to buy any surge protector, but you might receive better feedback if you gave more information as to your situation and/or your reason (s) for asking.
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Old 10-26-2012, 08:31 PM   #4
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Do I really need to buy a 30 amp and 50 amp
Nope!
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Old 10-27-2012, 05:16 PM   #5
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assuming you're talking about a surge protector, i don't have one but i rarely camp with hookups.

if i stayed in RV parks that had hookups, all the time, i would buy one. you never know how consistent a park's power system is and it's good insurance.

as for 30 or 50, depends on what RV you have, since you didn't post that info.
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Old 10-27-2012, 05:29 PM   #6
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I got a surge protector for my MH and at one RV park in Texas this last summer every site I was sent to by the owner showed a reversed polarity when I plugged into them. I got a refund and went down the road to the next park which I had no problem with. They are good insurance.
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Old 10-27-2012, 06:51 PM   #7
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Ditto about being good insurance. Lot's of people don't have any problems with not using one but I rather not take the chance.

Once I picked one up I was happy because it came in handy the second time I used it. With the campground being only a year old I wouldn't expected all the problems they had. Of course it was *100+ for the July 4th holiday.

My unit is 30 amp so I have the 30 amp SP.
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Old 10-27-2012, 08:27 PM   #8
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But why are these things so expensive? Why can't a handyman make one cheaper? Are there any DIY plans somebody could share?
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Old 10-27-2012, 08:33 PM   #9
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Not cheap for sure.

The time was right when I brought mine. It was on sale for the lowest price of the year at CW and I had a $75 off coupon. I also went with the portable unit because of price.
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Old 10-27-2012, 08:59 PM   #10
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Surge Protectors

Quote:
Originally Posted by tinkerreknit View Post
But why are these things so expensive? Why can't a handyman make one cheaper? Are there any DIY plans somebody could share?
Very good question, 1st time I've seen it posted here. Most surge protectors use a series of Varistor's to clamp spikes in supply voltage. I first saw them commercially in the early 1980's. Problem is they don't clamp sustained over voltage and more importantly they do not stop the effects of lighting strikes nearby. Way too many joules to clamp down in that case. I was curious like you why they are so expensive. We first used them in Radar installations with volt inputs and 5K + outputs. Mfg would blame the generator voltage spikes ruining their equipment. I took a failed spike protector home and "opened" it. It took hours using a good set of chisels to find the inside workings of this "surge protector". Amazing the electronics were set in epoxy pour, but with granite rock pebbles inserted in the pour and cure. Purpose was to keep people out. I discovered the unit cost us thousands of dollars and it was made of Varistor's worth $20 bucks. I guess the rest was in research and development? Just ask yourself, do I need one at home? CG use the same grid your home does. Low voltage is another issue not covered here.

You can buy varistor's in any electronic supply houses. Just size for the voltage/amperage your using and enclose. Make sure to design a bypass in your design case of failure.
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