I have a 3 phase armoured cable circuit feeding 220V lights. The cable will run to 4 way junction boxes with built in terminals and then on to the next junction box. The two remaining ways on each box will then be used to feed individual lights. Each phase will be used and the neutral will be continuous through the terminal box.
The regs deal with lights in a multiphase circuit but it is a bit confusing. It mentions multiphase disconnectors but isolating the neutral as well so that work can be performed on the circuit without switching all the lights off.
I am correct in assuming that a D/P isolator will have to be used at all Tee off's.
Anyone else have any views on the interpretation of the regs