crimping inside a jb-sleave or not

[johnmf]

bit of a debate going at work.

when using insulated through crimps (butt type) to join cables inside a junction box is it necessary to cover the crimp in heatshrink. i say no as the crimp is insulated and the jb is offering mechanical protection. its probably worth doing but i wouldnt say it was necesaary.

opinions.

 

[GaryMo]

Heat shrink not necessary.

 

[equitum]

Not necessary, in my opinion, for the reasons you stated. Why not just use the screw connections inside the JB , that's what they're for !

 

[GaryMo]

I have a feeling he means an adaptable box or similar without terminals.

 

[johnmf]

true garymo, poor terminology on my part, we were infact debating adaptable boxes or t-piece junction boxes in conduit.

 

[plugwash]

I doubt you will do a clean job using heatshrink on that style of crimp due to the way they splay out at the end.

If you want a crimp with a nice smooth sealed end (less risk of stuff catching on it which may be usefull in a crowded conduit install, less chance of problems if it accidently gets wet etc) then I would either use a bare metal crimp with heatshrink or use a crimp with built in heatshrink ends (e.g. http://www.rapidonline.com/producti...tier4=Heat+shrink+butt+splices&moduleno=63945 )

 

[333rocky333]

I doubt you will do a clean job using heatshrink on that style of crimp due to the way they splay out at the end.

If you use the 4/ 1 or the 3/ 1 ratio rather than the 2/ 1 ratio sleeving. it comes out quite well with the 2.5 and blue crimps and looks quite proffesional especially if you match the colour to the cables.

We just use a hot air attachment on a gas soldering iron to shrink it.

Not always necessary though