i must be bored to death! :-)

what's the order in a switched fcu - is it fuse first or switch?

i'd go for fuse first, possibly [maybe stretching it] to protect for posibility of over-current in a failed switch and beyond! ?!

(was thinking about fuse carriers in grid switch arrangements too)

Switch first then fuse so that fuse holder contacts are isolated when fuse is being replaced?

switched fuse - a means of isolation with cpd incorporated into isolator.

ie isolator with overload. :-)

-------------------------
Dougie
Power Plus Electrical.co.uk

My mission is to live as long as possible......so far so good!

He's asking about a switched fused connection unit Dougie

>> Switch first then fuse so that fuse holder contacts are isolated when fuse is being replaced?

yeah i can see that makes sense too.

so with the [unswitched] FCUs i presume folks are supposed to turn the power off (at the CU) before changing... wonder if they do

thanks all for commenting