This can depend on what country the MPC was destined for. I have Mk1's and a Mk2's. The Mk2 has the "standard" IEC plug that you find on so many things these days inc. the 2KXL. The Mk1 has an older style 2 Pin IEC plug which a lot more uncommon.
Both of these are not hardwired and are the "EVBS" spec MPC. Refer to the service manual for what this means. These machines are from the UK btw.