Electical Contractor

CODE CITATIONS Article 230            Services Article 250            Grounding Article 404            Switches Article 408             Switchboards and Panelboards Article 430            Motors, Motor Circuits and Controllers Article 645            Information Technology Equipment

CODE CITATIONS Article 110 Requirements for Electrical Installations

CODE CITATIONS Article 110 Requirements for Electrical Installations Article 215 Feeders Article 220 Branch Circuit, Feeder and Service Calculations Article 250 Grounding Article 400 Flexible Cords and Cables Article 404 Switches Article 430 Motors, Motor Circuits and Controllers Aluminum wire termi

* For reference figures, please refer to ELECTRICAL CONTRACTOR magazine. 210.52(D) Bathrooms Requirements pertaining to receptacle placement inside and outside dwellings are covered in 210.52(A) through (H).

CODE CITATIONS Article 100 Definitions Article 210 Branch Circuits Article 230 Services Article 250 Grounding Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures Article 445 Generators Article 518 Places of Assembly Disconnect for multiwire branch circuit Q: There was a requirement in the

210.52(C)(3) Peninsular Counter Spaces Article 210 covers branch circuits except those that supply only motor loads. Motor load requirements are covered in Article 430. Receptacle placement provisions for dwelling units are stipulated in 210.52(A) through (H).

Since the 1980s, the National Fire Protection Association’s fire alarm standards have required the notification appliance (speaker) circuits used in high-rise building Emergency Voice/Alarm Communications systems to “survive” during a fire.

CODE CITATIONS Article 110 Requirements for Electrical Installations Article 230 Services Article 240 Overcurrent Protection Article 310 Conductors for General Wiring Article 430 Motors, Motor Circuits, and Controllers Article 450 Transformers and Transformer Vaults Article 695 Fire Pumps Warning si

Article 210 Branch Circuits Article 220 Branch-Circuit, Feeder, and Service Calculations Article 230 Services Article 250 Grounding Article 404 Switches Article 410 Luminaires (Lighting Fixtures) Lampholders, and Lamps Article 445 Generators Article 702 Optional Standby Systems Volume I of the Fire