How to repair frayed cable
 

I'm having some trouble repairing a cord from a used piece of equipment I bought from another canreefer.

The cord from the tunze pump unfortunately will sit partway in the water of my DT. The protective sheathing is cracked, exposing all the wires inside. Luckily the internal wires still have their sheathing.

Originally my plan was to get some good heat shrink and use that but I can't find any that will fit over the end of the cord and shrink enough to enclose the exposed wires to the point of being considered waterproof.

I'm nervous of using electrical tape to do the job as it is going to be underwater.

Does anyone have any ideas on what could work? I'm down to my last brilliant idea of using silicone to seal it.

If it was my tank, I wouldn't use it...

There is brush on electrical tape that would work... but i'm not sure how fish safe it is :S

Here's a decent writeup on it:
http://www.epinions.com/review/BlueM...614307972?sb=1


One thing you'll have to find is something that has some sort of UV protection. Even electrical tape will turn to a solid cracking mess in time under your lights. Unless of course you have LED's, then I'm not sure how much it would fray. I had some wires in my canopy that where exposed to my halides that made the electrical tape toast.

the guys at our shop here use the brush on electrical tape for water proofing cables where electrical tape wont work, however, you would want to read up on toxins if there are any in the material

Hey thanks for the lead on the brush on tape. I'm going to give the company a call and ask about it being aquarium safe.

I'll let you guys know what I find out.

water proof shrink tube. We use it all the time with submersible pump installs, just make sure you follow the instructions to the "t"... but thats what I would use, its proven. Just my 2 cents.....

Where do you get it?

Thanks for another tip. With the heat shrink any piece that fits over the cord end will not shrink enough to create a seal on the actual cord. Is this shrink different?

I'm not sure if this is fish tank friendly or not but it works like a hot damn. Your local EECOL or Westburne will have it in stock. Looking at the applications part it does say "marine" however if it aquarium friendly or not is the question.

http://www.tnb.ca/en/fichier/whatsne...SIONTAPE_E.pdf

cord
 

i would take it apart and rewire it using the same cord if possible.you just end up with a shorter cord