This demolition one-line electrical diagram details the feeder circuits and connected equipment for motor control center MCC73S1. The schematic includes circuits for tunnel sump pump 1, ash area exhaust fan 74507, panel ash loading spout, lime slurry pumps 1 and 3 driven by VFD-77502 and VFD-77504, and potassium feed pumps 1 and 3 driven by VFD-77512 and VFD-77514. Conductor sizing is specified as three number 12 conductors and one number 12 ground in three-quarter inch conduit for circuits 21 through 23. A number 4/0 bare copper ground conductor ties the system to earth ground.
MCC73S1 DEMO ONE-LINE DIAGRAM NO SCALE GROUND X \ POTASSIUM FEED PUMPS 1&3 VFD-77512!77514 \ LIME SLURRY PUMPS 1&3 VFD- 77502 / 77504 N Xxxsr/ N \\\\\ PNL ASH LOADING (SPOUT) to tCi ' \ IV) X ASH AREA EXHAUST FAN 74507 X CO X \ TUNNEL SUMP 2 PUMP 1 P-83103 xX \ KO
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