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

January 2006
Outside feeder grounding and bonding Q: What grounding and bonding requirements apply to an outside feeder that supplies a woodworking hobby shop that is located in a detached building and is about 60 feet from, and supplied from, a single-family residence? The total calculated load is 38 amperes and the feeder is three-wire, 120 to 240 volts, single-phase underground in rigid metal conduit. READ MORE
December 2005
Q: Should 250.34 or Article 702 apply to a portable generator that is connected to a domestic refrigerator, freezer, television set, and floor and table lamps in a one-family residence? A: The answer depends on the method used to connect the generator to the appliances. READ MORE
November 2005
Article 210 Branch Circuits Article 250 Grounding and Bonding Article 310 Conductors for General Wiring Article 334 Nonmetallic-Sheathed Cable: Types NM, NMC and NMS Article 410 Luminaires (Lighting Fixtures), Lampholders and Lamps Article 695 Fire Pumps Parts of the NFPA 20-2003-Standard for the Installation of Stationary Pumps for Fire Protection are also mentioned. READ MORE
October 2005
Fire pump disconnecting means Q: Is the disconnect for an electric motor driving a fire pump required to be within sight of the motor or is it permitted to be out of sight if capable of being locked in the off position? Can the disconnect and overcurrent protection be located in a panelboard? READ MORE
September 2005
Control-circuit transformers Q: Do the requirements of Article 450—Transformers and Transformer Vaults or Article 725—Class 1, Class 2 and Class 3 Remote-Control, Signaling, and Power-Limited Circuits apply to a control-circuit transformers in a 480-volt combination motor starter? The transformer reduces 480 volts to 120 volts for the remote- control start-stop push buttons. READ MORE
August 2005
Laundry GFCI receptacles Q: Are all 15- and 20-ampere, 125V receptacles installed within six feet of a laundry or utility sink in a dwelling occupancy required to be protected by a ground fault circuit interrupter even where the receptacle is not readily accessible such as behind a clothes washer or a dryer? READ MORE
July 2005
Q: Does the National Electrical Code permit Class 2, Class 3 and telephone conductors to be installed in the same bored hole in a wooden stud with Type NM or Type AC cable operating at 120V? A: Class 2 and 3 conductors are permitted to occupy the same hole in a wood stud that contains Type NM or AC cables by 725.55(J). READ MORE
June 2005
Grounding-electrode continuity Q: Does the grounding-electrode conductor to driven ground rods have to be unbroken to both rods or may a splice be made at the first rod, then continue to the second ground rod by installing two ground clamps at the first ground rod, then continuing to the second rod with a 6 AWG copper grounding-electrode conductor? READ MORE
May 2005
Derating of conductors Q: One of my residential wiring jobs was turned down because I did not derate four two-wire-with-ground NM-B cables where they pass through a single hole in an upper wood plate. The cables leave the attic, pass through a double 2-by-4 wood plate at the ceiling down to a distribution panel in the stud wall. READ MORE

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