mhu

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This is an example of where it allows material such as HS and tape.


(B) Splices. Conductors shall be spliced or joined with
splicing devices identified for the use or by brazing, welding,
or soldering with a fusible metal or alloy. Soldered
splices shall first be spliced or joined so as to be mechanically
and electrically secure without solder and then be
soldered. All splices and joints and the free ends of conductors
shall be covered with an insulation equivalent to that of
the conductors or with an insulating device identified for
the purpose.
 
is heat shrink allowed by its self to protect live conductors

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Whether or not it's allowed, I'd be careful about the quality of the heat shrink. I've seen panels that look good when done but after a few years in service the heat shrink sleeving splits and sometimes falls off.
 
Whether or not it's allowed, I'd be careful about the quality of the heat shrink. I've seen panels that look good when done but after a few years in service the heat shrink sleeving splits and sometimes falls off.

I have seen that also, I prefer rubber tape.
 
There are two types of heat shrink, thin wall and thick wall. There is huge difference in their performance. Thick wall is definitely equal to 'normal' insulation and is usually superior to a few wraps of vinyl tape.
 
can heat shrink be used to protect conductors coming from
a light fixture to a j-box instead of using conduit or flex
the reason i ask is i have seen where the flex and the lamp socket have been removed
from a can fixture in the ceiling and led retrofit lamp pods looking device installed in place of it
[this is where the heat shrink comes in]
 
I have seen heat shrink used to turn 3 single conductor wires plus one uninsulated ground wire into a cable. This was outside in a weather exposed environment. It was heavy walled, 3:1 ratio, adhesived lined, ABS and UL approved tubing. Toughness, water resistance, and UV resistance are not an issue. 4 conductors twisted together aren't exactly round, though, which makes it difficult to seal in cord grips. Flexibility is another issue. Heavy walled heat shrink is not very flexible.
 
There is a thick flexible tape that comes rolled on a clear strip of plastic. The stuff melts into itself after some 24 - 48 hours; I don't remember who makes it.
 
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