Electical Contractor

If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to codefaqs@earthlink.net.

If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to codefaqs@earthlink.net.

After much technical discussion in Code-Making Panel 4 and an appeal to the NFPA Standards Council, the requirements for a new product involving photovoltaic (PV) installations was inserted into 690.11 in the 2011 National Electrical Code (NEC).

If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to codefaqs@earthlink.net.

As stated in 90.1(A) of the National Electrical Code (NEC), the purpose of the Code is the practical safeguarding of people and property from hazards arising from the use of electricity.

One of the most-referenced tables in the National Electrical Code (NEC) is Table 310.15(B)(16), formerly Table 310.16. It contains allowable ampacities of insulated copper and aluminum (or copper-clad aluminum) conductors rated up to and including 2,000 volts (V).

While teaching codes and standards across the United States, the question often arises why the National Electrical Code (NEC) incorporates so many requirements for signage. For example, orange has historically served as a warning to electrical personnel.

With the proliferation of electrical and electronic medical equipment in general care or critical care patient bed locations of a hospital, the number of branch circuits necessary to supply the equipment and the number of receptacles on these branch circuits becomes a real dilemma.

If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to codefaqs@earthlink.net.