George W. Flach

Code Q&A Columnist

George W. Flach was a regular contributing Code editor for Electrical Contractor magazine, serving for more than 40 years. His long-running column, Code Q&A, is one of the most widely read in the magazine's history. He is a former chief electrical inspector for New Orleans and held many other prestigious positions in the electrical industry, including IAEI board of directors and executive committee. He passed away in August 2009.

Articles by George W. Flach

April 2005
Flexible cord terminations Q: May a properly sized flexible cord with 15-ampere male attachment plugs on both ends be used to supply an optional standby generator for a small business? The cord is intended to plug into a receptacle on the generator and a receptacle on the outside of the building. READ MORE
March 2005
Article 250-Grounding and Bonding Article 312-Cabinets, Cutout Boxes, and Meter Socket Enclosures Article 314- Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; Fittings; and Handhold Enclosures Article 350-Liquidtight Flexible Metal Conduit: Type LFMC Article 404-Switches Article 410-Luminaires (Lighting Fixtures), Lampholders, and Lamps Article 590-Temporary Installations Article 700-Eme READ MORE
February 2005
Article 90 Introduction Article 210 Branch Circuits Article 220 Branch-Circuit, Feeder, and Service Calculations Article 230 Services Article 240 Overcurrent Protection Article 250 Grounding Article 310 Conductors for General Wiring Article 406 Receptacles, Cord Connectors and Attachment Plugs (Caps) Article 410 Luminaires (Lighting Fixtures), Lampholders, and Lamps Article 517 Health Care Facili READ MORE
January 2005
Article 110 Requirements for Electrical Installations Article 210 Branch Circuits Article 230 Services Article 240 Overcurrent Protection Article 300 Wiring Methods Article 342 Intermediate Metal Conduit: Type IMC Article 352 Rigid Nonmetallic Conduit: Type RNC Article 408 Switchboards and Panelboards Article 430 Motors, Motor Circuits, and Controllers Article 511 Commercial Garages, Repair and St READ MORE
December 2004
Article 100 Definitions Article 210 Branch Circuits Article 240 Overcurrent Protection Article 250 Grounding Article 310 Conductors for General Wiring Article 422 Appliances Article 680 Swimming Pools, Fountains, and Similar Installations Derating Parallel Conductors Q: I installed a 400-ampere, 4-wire feeder from a 208Y/120 volt service to supply a panelboard for a store in a shopping center. READ MORE
November 2004
Article 210 Branch Circuits Article 240 Overcurrent Protection Article 250 Grounding Article 310 Conductors for General Wiring Article 430 Motors, Motor Circuits and Controllers Branch-circuit size for motor load Q: I have to install a 11/2 horsepower, single-phase, 120V motor with a nameplate full-load current of 17.5 amperes. READ MORE
October 2004
Article 210 Branch Circuits Article 250 Grounding Article 310 Conductors for General Wiring Article 320 Armored Cable: Type AC Article 404 Switches Derating Cables Q: Is it necessary to derate types NM-B, AC or MC cables where these cables are bundled to enter a branch-circuit panelboard? READ MORE
September 2004
Article 110 Requirements for Electrical Installations Article 250 Grounding Article 310 Conductors for General Wiring Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures Article 430 Motors, Motor Circuits and Controllers Article 518 Places of Assembly Thermostat as motor disconnect Q:May a thermostat located less than 5 feet away from a 1/6 hp attic exhaust fan be used as the disconnect READ MORE
August 2004
Article 100 Definitions Article 110 Requirements for Electrical Installations Article 210 Branch Circuits Article 220 Branch-Circuit, Feeder and Service Calculations Article 300 Wiring Methods Article 310 Conductors for General Wiring Article 450 Transformers and Transformer Vaults Article 500 Hazardous (Classified) Locations, Classes I, II and III, Divisions 1 and 2 Article 505 Class I, Zone 0, 1 READ MORE

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