joining of twin and earth cables.

[bowmandj]

I have come to a site to assist the install if fire protection equipment. Another contractor is doing the main electrical wiring. Working with one of them I observed him joining a 2.5 T&E ring cable under floorboards. I expected him to use a new style maintenance free joint box (e.g. the Ashley one) but instead he used crimps, then taped the crimp joints, then heat shrink sealed that. To prevent tension on the joint he then formed a U around the joint and used cable clips to hold the cables together. Finally he affixed the cable before and after the joint to a joist using a flat cable clip.

No joint box of any form.

Would this be okay by most peoples view of the regs.? From a time point of view he took no longer then a joint box would take (with fiddly strain clamps) so it looks cost effective. But would it be approved?

regards

derrick

 

[telectrix]

if he has used heat shrink to replace the sheath, then should be OK. i would not have formed a U bend though, just clamped the cable to the joist to ensure no stress on the joint.

edit: just re-read "tape", surely he used heat shrink over the cripms, then again over the whole cable?

 

[brman]

don't see why not. At least I hope so as I have done similar things in the past although I would prefer to put the crimps inside a line enclosure or similar nowadays.