sump pump

[Besoeker]

I'ld ceck the stuff Marc said first. Bad bearings and even more likely failing/clogged pump will cause high current draw.

Or a 50Hz motor on a 60Hz supply.

 

[ptonsparky]

What does a 90hp 50hz motor draw for current normally?

Better yet what is the complete nameplate data for the specific motor we are talking about?

 

[ptonsparky]

Ok found a list for Baldor. 151-160 amps.

 

[Besoeker]

What does a 90hp 50hz motor draw for current normally?

That would depend on voltage, efficiency and power factor.
At 400V it would be around the 160A region.