In another thread that I read, someone commented on maintenance free joints. Assuming that insulated joints are used with a proper ratchet crimping tool, is it absolutely necessary to also add heatshrink? if it is, should that be a cover that goes over all three wires togerther as well as the casing, or is it acceptable to just have each individual wire covered?
I ask as I am raising some sockets and not all of them are fed down the wall so I need to join the cable. Getting a heatshrink to cover all three wires together seems difficult to obtain. I couldn't get any in our local elcetrician's shop, although they did have individual wire heatshrink, and the guy there suggested wrapping it in amalgam tape. Is this suggestion acceptable, from a safety and regulatory perspective?
TIA.
I ask as I am raising some sockets and not all of them are fed down the wall so I need to join the cable. Getting a heatshrink to cover all three wires together seems difficult to obtain. I couldn't get any in our local elcetrician's shop, although they did have individual wire heatshrink, and the guy there suggested wrapping it in amalgam tape. Is this suggestion acceptable, from a safety and regulatory perspective?
TIA.