mmm thanks for the replies.
the definitive is due to unbalanced TP loads and N isolating first ?
and in single phase isolating all lives due to non pro users using system ?
FYI this supplies a 4 post ramp in a domestic car enthusiasts garage.
:?
thanks for the replies
why in single phase is it normal to have a DP isolator yet it is acceptable to have only the Line isolated in 3ph !?
therefore would an mcb on the phase or a single pole isolator(if you can get one) be acceptable as an isolator on a single phase sub main ;-)...
Hi all
was looking at a 3 phase and neutral sub main 10mm swa to garage ramp - already installed.
the supply was via a butchered wylex metal 8 way single phase consumer unit with a merlin 3 phase isolator supplied by 25mm tails and linked to a merlin 50a tp b mcb using 16mm tails .
the...