MCB rating for 3ph Ind Microwave...?

[Jagermini]

Hey folks, just wondering does anyone out there know size MCB there should be for a 3-phase Industrial microwave, 9000W? Cable run is just 15 meters...
I've worked it out to be load of about 14A, so it should be really a 20 A MCB. That sound right?

 

[holmslaw]

..

 

[ricicle]

Is 9000w the input or output rating ?

 

[Jagermini]

Cheers, been a while since I had to work it out myself, just making sure the maths wasn't rusty. Yeah, I've got 6sq SWA sitting there, 5 core, so the rest should be no bother at all. Sound!

 

[Jagermini]

Is 9000w the input or output rating ?

This is the input rating.

 

[ban-all-sheds]

Even so it'll heat your pies PDQ....

 

[Jagermini]

I was mis-informed, 'tis a 12kW frier. I think it still stands.