Hot Jointing of cables

Yes, Hot jointing is more relaible. In hot Jointing, Heat shrinkable kit is used. When the joint cools down, it grips the joint so well just like original cable insulation and hence is more reliable.

Rajiv Mehan

Is rajivmehans reply what you were looking for? Hot jointing is also used to describe splicing high volt cables whilst they are live. The cables must be connected using a bypass link then the splice can be done without interupting the supply.

Anyone here ever heard of Cad Welding? It uses a Cadmium charge that burns super hot and melts a filler metal. Cool tool for bonding coper ground wire to steel beams and rebar. Will also bond coper to coper.

Not that I would ever try such a thing, but you can make a heck of a hole all the way through a black top surface if you pour the cadmium charge out on a parking lot and set it off.

Talk to a Scotch or Raychem expert about this...

I agree with others, that a heat-shrink joint is more reliable. The makers of cold-shrink products may not agree...

A good question to ask is HOW LONG would you expect the joint or termination to remain intact? Will the termination require periodical removal or access? Such as a motor termination?

We (just last week) had a day-long splice and termination school here, mainly dealing with Raychem products, mainly power connections, and a focus on 5kv to 35kv shielded power cables. What I heard is that either is reliable, but heat-shrink products are designed for (40 year) life... If OUTDOOR, I'd choose heat-shrink. Indoor, cold may be OK. Our site standards (and my preference) is Raychem brand, heat-shrink.

NO- I do not represent Raychem...

Cold shrink storage has to be below 43 degrees celsius. Further , cable preparation method remains the same and generally all three core cables semiconducting is removed using a gas torch.

Cold shrink is not exactly a stand alone cold shrink components but a a hybrid of tape, stress control patches and cold shrink sleeves and definitely requires installers skills to wind the tapes correctly to obtain tight seals