I just purchase a new house, this morning the alarm on the sewer ejector pump was going off. I opened the alarm box and one of the circuit breakers was tripped (the 20amp, not the 10). I switched it back on and it quickly tripped again. Is this more likely to be an electrical problem or a pump problem? Should I call a plumber or an electrician?
If this is an ejector pit outdoors and is tied to the community sanitary sewer you should be calling your sewer or sanitary district. The 20 amp breaker is part of the 240vac feed for the grinder pump. The 10 amp breaker is for the control and alarm circuitry that alerted you to the problem. Since you are on this type of sanitary system you should be following the rules for a septic system and be very careful of what is or is not allowed to go down the sewer. An electrician generally can not handle this type of problem. A plumber may be able to handle it if they are already in the business of installing/repairing this type of system. These systems use special wiring and connectors, industrial grade pumps, and require special procedures to clear the problem. Your sanitary district has all these.