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11 /17/ 19, 2:44amLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1234[5]678 ]
Subject: Re: freeze protectionn wires


Author:
Don
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Date Posted: 11/ 12/ 05, 6:19pm
In reply to: ernie ekberg 's message, "freeze protectionn wires" on 09/ 15/ 05, 4:56pm

Hello,

The best is self regulating heat/trace tape. It is also spendy. Basically, the colder it gets the hotter it gets. Two leads run the length of the tape, the material in between is heat sensitive. If you place an ice cube on a section of the tape, that area in contact with the ice cube will heat up. Rated in watts per foot, I used 5 watts per foot around copper pipes, I think 3 watts per foot is max with plastics.

Because it is self regulating, it can wrap arround itself w/o overheating. It can be turned on by manual switch, thermostat etc.

Your current heat tape is not self regulating and probably is turned on via built in thermostat. It is a simple resistive loop.

On my bird this resistive loop was double wrapped around the pipes and covered with what was now dried out duct tape. It was wrapped around itself, which is not recommended these days as far as I could tell. There were some minor burn marks from this tape on itself and the freshwater tank. I this the thermostat had long stopped working and it was making no heat.

Hopefully, you wont have to take half as much of your coach appart as I did to fully replace it. I have a 2' section behind the shower that I still cant quite access.

A tip. This stuff is fairly obscure outside of industry. Expect 5 bucks a foot for the a non-armored type. Contact a local insulator firm(s) and see if they'll make you a deal on some scrap pieces. Anything less than 30' might be scrap to these guys...

It can be spliced and shortend as necessary, some folks install a neon light at the far end so that you can see that light if the tape is getting power. At regular room temperature mine radiated a slight heat.

Good luck, Don

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Author:
ernie ekberg
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Date Posted: 11/ 13/ 05, 5:34am

Thank you, Don for the reply. I didn't know there were so many varieties. Ernie Ekberg

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