1995 Mitsubishi Galant Fuses Keep Blowing

Recently my 1995 Mitsubishi stopped after having a new battery, new fuel pump, new spark plugs, and a new distributor and wires installed. My mechanic said it was a fuse under the hood. After replacing a 30A and a 50A fuse, and trying to start the car, both fuses were blown.

Can you please tell me if I have an electrical problem, what it might be or is it something else to cause the fuses to blow.