fuses

Hello to everyone Can the fuses inside an MCC be higher than the disconect? Example I have an MCC bucket with a Disconnect, Fuses, Contactor and O/L. All parts are rated at 30Amps except the fuses which are at 40amps and O/L is turn down to 22amps. This seems wrong to me does anyone have a code...

I have a 125hp 277/480 submersible pump i need to build service for.I am confused on sizing fuse size and conductors from service to vfd that will be controlling pump; 156 fla x 175 % = 273 for fuse size? what would the wire size be from service to vfd would it be rated for 300 amp 350 mcm?

I know the best option is to replace the fuse box w/ a breaker box, but I don't have the money to do so right now. Here's the problem... 1) 15 amp Type S fuse will no longer screw into the Edison Base in the fuse box because it has been replaced so many times the threads are stripped. Is it...

Ok, I had a new request today, and curious to know if any of you guys have any input on this one. Here is the language of the request: This is for a relamp project that is moving from 175W MH lamps to 150W Pulse Start. No ballast change is required, but I have to say I have no idea on the...