Strange way to supply

[ipf]

Industrial EICR ongoing. Weird but interesting.
New single phase DB supply picked up from one way of old TP 3036 switch fuse left in ON position with isolator engagement removed. Presumably, to save isolating busbar chamber. A few points to question regarding EICR.
Wired in 6mm tails, for some reason. Domestic lads involved, it seems.

 

[binky]

So they have taken a supply from the old board to the new board reusing the old enclosure for the cable run?

Having worked in a few schools, such things are not that unusual. The question is, is it safe?

 

[ipf]

Seen a lot worse, no worries. It's just additional IT stuff. Found seven CU's added to DB's already. All for the same reason. Guess what?
Seems safe enough. It was an unused switch fuse.
They just used it as a way to get round isolation of busbar chamber, using rewireable in line with cartridge fuse in the new box.
Switch assembly removed and isolator bar operated manually to switch on
then door screwed closed.
Just creating joints, so a good reason for thorough testing. I'll isolate at the rewireable, when possible and if it tests well, ok.
It might not be a rewireable fuse, the unused ones are wired in ordinary copper.
If so, not being used for protection.......but is cable of sufficient size?
Just interesting.