There seems to be a bit of debate as to whether SP or DP grid-switches are safest when wiring 5A lighting wall sockets (on a lighting circuit)... What are the latest thoughts if getting a neutral to, and switched-neutral from, the switch back box isn't an issue?
DP initally seems best to switch both live and neutral, but like the 13A mains socket discussions, are these actually (potentially) less safe as any failure in the live pole of the switch could still leave the sockets live even though they appear to be off at the lamp (since then only the neutral pole is open)?
I would personally tend towards the DP approach still, since this approach is also used in grid switch banks for 13A appliance isolation on mains ring spurs - but I'm open to persuasion otherwise in light of the above "risk"...
(I know there is also a separate debate about grid-switch point-loading in general...)
DP initally seems best to switch both live and neutral, but like the 13A mains socket discussions, are these actually (potentially) less safe as any failure in the live pole of the switch could still leave the sockets live even though they appear to be off at the lamp (since then only the neutral pole is open)?
I would personally tend towards the DP approach still, since this approach is also used in grid switch banks for 13A appliance isolation on mains ring spurs - but I'm open to persuasion otherwise in light of the above "risk"...
(I know there is also a separate debate about grid-switch point-loading in general...)