Codes & Standards

 

Essential to the work of the electrical contractor is knowledge of the National Electrical Code, the National Electrical Installation Standards and additional standards and codes administered by the National Fire Protection Association, the Occupational Safety and Health Administration and others. Here is a list of all our articles on codes and standards listed chronologically by issue date. 

During a recent National Electrical Code (NEC) training program, inquiries about ground-fault protection of equipment (GFPE) were raised.

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Pull-through angle connectors?


Some photovoltaic (PV) inverter manufacturers have designed and built transformer-less inverters to add to their existing line of transformer-type inverters for installation in the United States. Transformer-less inverters have been popular in Europe for quite some time.

Article 430 of the National Electrical Code (NEC) covers motors, motor branch-circuit and feeder conductors, motor branch-circuit and feeder protection, motor-overload protection, motor-control circuits, motor controllers, and motor-control centers.

More on Codes & Standards

 
Type SE Cable Support, Gas Pipe Bonding And More

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent 
to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Type SE cable support


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Sizing Conductors, Part XXXIV

Article 240, in the National Electrical Code (NEC), provides general requirements for overcurrent protection and overcurrent protective devices.

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Growth Spurt

For many years, Article 250, which covers grounding and bonding in the National Electrical Code (NEC), only contained two tables. Table 250.122 was used for sizing the equipment grounding conductors, based on the size of the overcurrent protective device in the circuit.

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Managing Energy Management

Energy management is becoming commonplace in today’s electrical infrastructures through the control of utilization equipment, energy storage and power production. Yet, limited consideration is found in electrical installation standards to actively manage these systems.

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Listed Luminaires, Outside Feeder Taps And More

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Listed luminaire?


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Sizing Conductors, Part XXXIII

The first seven parts of Article 240 in the National Electrical Code (NEC) provide the general requirements for overcurrent protection and overcurrent protective devices not more than 1,000 volts (V), nominal.

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AFCIs Now More Integral

This article returns to the topic of my December 2013 column, which dealt with some of the changes that occurred to 210.12 for arc-fault circuit interrupters (AFCI) in the 2014 National Electrical Code (NEC), such as the expansion of AFCI devices to include circuits for kitchens and laundry equipmen

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