MEM TP&N Switched Fuse Question

[uksparks]

Thanks for that, I guess I was taking it a bit too literally maybe, the heating isn't too bigger issue as on other phases.

I reckon it will be fine to stock a 32A charger for a car in too, pushing the boat out a bit, but there's over £500 in it for a quick bit of work.

 

[uksparks]

If its rented they won't be drilling into the walls.

If they drill into the steel conduit with a DIY hammer drill they will vibrate the steel conduit enough for all the plaster to fall off before they get through it.

Storage heaters will give you some lovely calbacks to deal with nuisance tripping when they first get turned on after summer.

They should not be drilling, we shall see what happens.

The storage heaters are all brand new so hopefully should have many issues.

Ill post up a load of pics on here of the completed project when done in a couple of weeks so you can see, it wasa big one for me on my own to do.

Anyway, I'm going to sleep now, thanks for the chat!

 

[davesparks]

I've got a commercial building I do maintainance at with standard 100A TPN supply.

Total connected load after diversity (lots of aircon) works out around 120A per phase (assuming balanced)
Actual load recorded on a load study (middle of winter, snow on the ground)
L1 peaks at ~120A
L2 peaks at ~60A
L3 peaks at ~40A

The DNO come out and change the cutout fuse in L1 at approx 18month intervals, it has only happened once since I took over the maintenance and that is what prompted the load study.

The job is in planning for all new switchgear and balancing of the loads, was set to go ahead but all of the aircon kit got written off when the river rose and flooded it all this winter. So a complete new aircon system requires completely different supplies.