Buildings Maintenance Guide Cards - Internal Revenue Service

E-51 Motor Starter, Less than 100 Hp (Frequency: Annual) 168. E-52 Auxiliary Protective Relays (Frequency: Annual) 169. E-56 Dimmer and Control, Stage and General Lighting (Frequency: Quarterly) 170. E-57 Low Voltage Dry Type Transformer (30 KVA or More, 600 Volts or Less) (Frequency: 3 … ................
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