Non-compliant. OP states that it is inaccessible.maybe not the best solution but you could use a 60amp junction boxhttp://www.tlc-direct.co.uk/Products/AAJB60.html
fair enuff,,,,,didnt read his post properly:coatNon-compliant. OP states that it is inaccessible.
I prefer one of these.And something like this for shrinking the tube:http://www.screwfix.com/search.do;jsessionid=IU20KFCHNZ1TQCSTHZOSFFI?_dyncharset=UTF-8&fh_search=41676
LOL if that is ever a text talk I apologise but under the circumstances I think appropiate.I prefer one of these.
iirc, that rubber tape is not designed for insulation purposes. scotch 38 tape is though (and more expensive). from past experience with it (i have used it), i would not use that on its ownSpot on Patch.Add some of this:
http://www.screwfix.com/search.do;jsessionid=IU20KFCHNZ1TQCSTHZOSFFI?_dyncharset=UTF-8&fh_search=34666