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Old 03-20-2016, 09:53 AM   #11
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You may have to add the twist lock end yourself which is no big deal if you can find one that would work inline like you want to do.

An alternative would be to buy an entire longer cable which would give you 100% redundancy. IMO, that's the best most reliable option. Put it under the seat of the truck and hope you don't have to use it. I only had one occasion that I almost needed more than 25' length. A state park had all the electrical post on the wrong side.

You can always limp by with a regular heavy duty extension cord till you can run in to the nearest RV supply to get a replacement.

IMO, I wouldn't worry about the weather exposure but you can cover it as mentioned or wrap it in a garbage bag. My cord is plugged in 24/7 to the side of my house and has never had issues. You can actually see the prongs, so it's far from weather proof.

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Old 03-20-2016, 10:10 AM   #12
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Originally Posted by bob213 View Post
Actually if you look up dielectric grease you will find it is a NON conductor. Best product to use is Noalox.

Ideal NOALOX 4 oz. Anti-Oxidant Compound-30-026 - The Home Depot

The reason for dielectric is so it doesn't leak current between the prongs.

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Old 03-20-2016, 10:25 AM   #13
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I have two 50 foot marinco cords for boats like the one above . You will also need a collar and ring to make it watertight. As on this website.

Marinco Sealing Collar with Threaded Ring, 30A Systems | Redden Marine Supply
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Old 03-20-2016, 10:00 PM   #14
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I ended up giving up and just getting a regular 30A extension cord.
I'll use some dielectric grease between the connectors to prevent sorts due to water ingress (since it is indeed an insulator) and some PPE (polyphenyl ether is great as a conductive contact cleaner) on the contacts, and just keep it off the ground and covered.
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Old 05-17-2016, 08:08 AM   #15
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I see where there are locks to protect people from steeling surge protectors. It seems like if the surge protector was on the end of an extension, someone could steel the extension WITH surge protector. I just bought my RV this weekend so still learning...but is there a gadget one can buy to prevent someone from unplugging at the point where the extension is plugged in?
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Old 05-17-2016, 08:30 AM   #16
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I attached aircraft Cable and use pad locks. Put a piece on each end, use crimps and put shrink over the ends to prevent scraps from the wire cable ends. I added the shrink after photo was taken.

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Old 05-17-2016, 09:18 AM   #17
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The one from Progressive industries comes with a metal ring so you can lock it directly to the post.

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Old 05-17-2016, 11:54 AM   #18
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Thanks for the response!

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