looks like it has 3 holes in it
Switch fuse - Minimum fuse rating
- Thread starter AndyPRK
- Start date
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Are you sure that you're not looking at 'lugs', or something like that? In any event, a third hole would not make any difference!
Kind Regards, John
Yes it does have 3 holes and the middle one is the CPC of course, I think (someone add a regulation number please)...
And yes there's a hacksaw slot between each hole. Interestingly we had a project some years ago which didn't have slots on 100A incomer tails but demonstrated that it was still OK according to the engineer who handled the project.
And yes there's a hacksaw slot between each hole. Interestingly we had a project some years ago which didn't have slots on 100A incomer tails but demonstrated that it was still OK according to the engineer who handled the project.
I knew we could rely on you
What do you mean by 'demonstrated'? Did he run 100A through the cables for a while to show you what happened (or didn't happen)? - or what?
Kind Regards, John
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I assume some sort of current was passed or modelling undertaken. I forget the details now.
To be honest it's not something I would think to remember the details of as with me it wouldn't have gone past the design stage like that.
I've got more than him
.....
Kind Regards, John
Cant tell the physical size but they look similar to the ones we use in din rail mounted fuseholders in comercial control panels for fridges and aircon, some of the control fuses can be as low as 6amp maybe lower
Oh for some reason i thought they were them Gg fuses about 8mm and 13mm
No, they're 'big bu**ers' - I think the same size as used in cutouts, aren't they?Oh for some reason i thought they were them Gg fuses about 8mm and 13mm
Kind Regards, John
I think your right they do, but ive only seen them as low as 40 amp, i do more comercial stuff so generally see the even fatter ones that we call "Barrel fuses" or the big "J" fuses
Yes the fatter ones are 30mm (Lawson MF) and I think the one in my cutout may be even larger.
Fuses from other manufacturers are available.
Fuses from other manufacturers are available.
As you can see, Lawson MEs go right down to 5A, but the physically larger MF range only go down to 20A. ...
Kind Regards, John
Have you ever needed either of them?I've got more than him
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