Just finished plastering an outbuilding workshop and got my electrician back to second fix and self certify.After much cursing about his own stupidity he informed me he had used 1.5 twin brown instead of blue and brown for the lighting lool.I have worked many times with him befor and never had a problem and certainly do not want to cause him the problem of re doing loop. he said if I would accept it he would bell out all feeds and sleeve neutrals blue securely tape blue sleeve to stipped back outer and make a note on installation papers. Customer is OK with this as am I but is it OK re regs for new installation . many thanks.

