Electrical Surge Protectors - Page 2 - Fiberglass RV


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Old 03-10-2012, 10:02 PM   #15
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I did a lot of research on surge protectors.

Because you do not have AC, consider making your own. Here's one thread started by me.

Make-Your-Own Surge Protector

I suggest you scroll down this page as there is a post which has a copy of the original Casita forum post.


Because I do have AC [and have to worry about low voltage as well as surges], I ended up getting a SafeGuard Portable 30 AMP Unit. I got it through Adventure RV for a fairly good price. http://www.adventurerv.net/portable-...mp-p-2763.html

I also bought a 30 AMP 25 foot RV Extension cord so that I can lock my surge protector in the cabin. http://www.adventurerv.net/amp-power...rd-p-7098.html This combo has given me much piece of mind.

It is preferable to get a portable Surge Protection device over hard wiring something to your trailer. If and when your decide to trade up to another trailer, you can take the surge protection unit with you. The extension cord allows me to keep the protector out of sight and in my trailer.

It takes me about 5-10 minutes to unpack the surge protector and extension cord, plug it all in, and verify the safety of the hook-up. (If the current is bad, there is no point to hooking up the water and sewage line.)

As I said, it is one of the best (dual) investments I have ever made for the trailer.
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Old 03-11-2012, 07:55 AM   #16
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Hi: All... We inherited one along with a lecture about not leaving it exposed to allow someone to borrow it. We also got a warning about not leaving it behind as it was expensive!!! So with that we don't use it so the afore mentioned won't happen. I always mean to hard wire it into the trailers system but never seem to get a round "Tuit".
Alf S. North shore of Lake Erie
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Old 03-11-2012, 04:23 PM   #17
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Quote:
Originally Posted by Alf S. View Post
Hi: All... We inherited one along with a lecture about not leaving it exposed to allow someone to borrow it. We also got a warning about not leaving it behind as it was expensive!!! So with that we don't use it so the afore mentioned won't happen. I always mean to hard wire it into the trailers system but never seem to get a round "Tuit".
Alf S. North shore of Lake Erie
Honestly Alf, a 25' extension cord would address your concerns. When you disconnect from the power source, your unhooking that extension cord which you'll be stowing in you cabin. The Surge Protector (and the other end of the extension cord) are already located in your cabin, ready for the road.

I unfortunately don't recall the explanation of why it would be a mistake to hard wire a surge protector to a small travel trailer (the discussion did take place on the Casita Travel forum). I'm thinking one reason is that if you experience a power surge and "blow out" the surge protector unit, it will be a pain to hard wire a new unit. But, it did convince me that it is technically preferable, as well as most economical (hard wire units do cost more) to have a good, portable unit.
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Old 03-11-2012, 04:29 PM   #18
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Quote:
Originally Posted by Jane P. View Post
H..........
I unfortunately don't recall the explanation of why it would be a mistake to hard wire a surge protector to a small travel trailer (the discussion did take place on the Casita Travel forum). I'm thinking one reason is that if you experience a power surge and "blow out" the surge protector unit, it will be a pain to hard wire a new unit. But, it did convince me that it is technically preferable, as well as most economical (hard wire units do cost more) to have a good, portable unit.
The little unit that I linked to earlier would be easy to replace. At least relatively easy.
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Old 03-11-2012, 10:35 PM   #19
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Well after reading all the replies I think that I will try to make one as shown on the Casita forum. Several people here suggested it. Even with my limited electrical skills I should be able to do this. Thanks to everyone who has responded and keep any more details coming

Sandy C
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Old 03-11-2012, 11:54 PM   #20
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Progressive Industries 30 amp EMS-HW30C

While researching the necessity for Surge Protector I run into this study Surges and Surge Protection by phred which convinced me to get one. Comparing these two:
30A Hardwire | Technology Research Corporation
EMS-HW30C
I selected the Progressive one because:
- It has higher energy dissipation capacity 1790 versus 1050 Joules
- It lists maximum current spike at 44,000A and the TRC specs 6,500 A / MOV but I have no idea how many MOVs are there.
- Has a remote.
- Can be open to replace a MOV devices which have limited life.

Before I open my wallet I need to check with manufacturer if the unit has UL #1449 approval.

30 Amp Hardwire Surge Protector EMS-HW30C.

Installation:
RV.Net Open Roads Forum: Travel Trailers: P.I. EMS-HW30C Install

George.
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Old 03-12-2012, 03:35 PM   #21
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Intermatic IG1240RC3

I called both RV Power surge vendors and neither of them has UL 1449 listed mobile or hardwired products. They are UL listed for generic electronic/electrical device.
In this case I decided to save some money and go with Intermatic IG1240RC3 which is listed for ANSI/UL 1449 3rd edition for indoor/ outdoor (NEMA 3R) installation. For single phase both lines, black wires can be connected. I guess any time RV or M is associated with a product prices go up.

Talking with TRC or Progressive Ind. had limited technical substance but lot of fear of fried equipment. Talking with Intermatic was purely technical.
IG1240RC3
Amazon.com: Intermatic IG1240RC3 Whole Home Type-2 Surge Protection Device: Home Improvement

In case of low voltage or reverse polarity I already have TRC Power Monitor with multiple alarms. So if someone is in the trailer we are protected.
Amazon.com: Surge Guard LCD Digital Line Monitor - AECM20020: Automotive

George.
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Old 03-12-2012, 03:50 PM   #22
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"In case of low voltage or reverse polarity I already have TRC Power Monitor with multiple alarms. So if someone is in the trailer we are protected."
But you may have to leave the a/c on in your trailer while away from your unit in which case your alarms will be to no avail. That is why I got the unit because I have pets. If you do not have the pet need then your route was more economical.
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Old 03-12-2012, 04:07 PM   #23
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Originally Posted by cpaharley2008 View Post
"In case of low voltage or reverse polarity I already have TRC Power Monitor with multiple alarms. So if someone is in the trailer we are protected."
But you may have to leave the a/c on in your trailer while away from your unit in which case your alarms will be to no avail. That is why I got the unit because I have pets. If you do not have the pet need then your route was more economical.
You are correct, but, for us the likelihood of running AC while being absent is very, very low which combined with possible brownout during this rare time would make this possible event statistically insignificant. I think that probability of frying electronic devices with voltage spikes is much higher and I trust ANSI/UL 1449 rating more than the one from “fearful folks”.

Your situation with pets is definitely different.

George.
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Old 03-12-2012, 05:52 PM   #24
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A friend of mine recommended Leviton product so I called them up and they recommended http://www.leviton.com/OA_HTML/Produ...minisite=10251 available at Home Depot for $50. Their claim to fame is use of a smaller stack of 40mm versus a larger stack of 20mm MOV devices, used by most of their competitors, which have better electrical performance.

I probably spent a total of an hour researching this purchase and knocked the price down from $250 to $50.

George.
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Old 03-12-2012, 09:14 PM   #25
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Joules comparison

I just picked up Leviton from Home Depot and it has # of Joules on the box. Apparently this metric is no longer use by UL to gauge SPDs but just for reference to RV devices it is good for comparison. Total dissipation of unwanted energy of surges is measured in Joules.

Progressive EMS-HW30C 1790 Joules - $250
TRC Surge Guard 34520 1050 Joules -$240
Leviton 51110-1 3400 Joules $50
If low voltage disconnect is your priority than TRC or Progressive is a good choice. If priority is protection from voltage surges than Leviton is an unquestionable winner.

George.
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Old 03-13-2012, 08:38 PM   #26
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Question

George just a couple of questions from one who is electrically challenged. Where would this unit be put in the trailer electrical system? Between the plug and the panel? On the panel? I looked at the instruction sheet and they show 2 blacks, one white and one green going out. I think the trailer only has 1 black, 1white and 1 green. What happens to the extra black?

Any help would be appreciated but please keep it simple. Thanks

Sandy C
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Old 03-13-2012, 09:19 PM   #27
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Sandy: the unit is made for a 240v system. All you need to do is tie the two black wires together. I installed a similar unit in my home in the mountains several years ago(lots of lightning spikes) and have not had a problem since.
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Old 03-13-2012, 09:23 PM   #28
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Originally Posted by Sandy Christie View Post
George just a couple of questions from one who is electrically challenged. Where would this unit be put in the trailer electrical system? Between the plug and the panel? On the panel? I looked at the instruction sheet and they show 2 blacks, one white and one green going out. I think the trailer only has 1 black, 1white and 1 green. What happens to the extra black?

Any help would be appreciated but please keep it simple. Thanks

Sandy C
The Leviton 51110-001 has 4 wires which need to be connected in parallel to shore power cable. The connection place could be at the main panel in the trailer.

1 - Leviton black wire – line >>>>> shore power black wire - line
2 - Leviton black wire – line >>>>> shore power black wire - line
3 - Leviton white wire – neutral >>>>> shore power white wire - neutral
4 - Leviton green wire – ground >>>>> shore power green or copper wire – ground

The Leviton SPD should be as close to the power line as possible and wires should be straight. You are dealing with safety so a local electrician help would be advised.

Good luck.

George.
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