Performed heating maintenance on a Rheem air handler all electric system. Does not have a heat pump. Changed 16x25x1 filter. Last company had folded a 20x25x1 and shoved it in there. System has a 3 phase 10kw heater. Inspected wiring. Nothing burnt and all connections are tight. All three legs of power with the heat running are drawing 31 to 32 amps. Sealed the loose disconnect switch cover with foil tape. This was allowing air and dirt to be drawn into the system.