Chapter Corner

Newsroom & Insights: Code Corner

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Code Q&A - April 2013

Over the course of my career, I have been asked several code-related questions by both apprentices and other experienced contractors. This column will provide answers to some popular questions.

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Code Q&A

Over the course of my career, I have been asked several code-related questions by both apprentices and other experienced contractors. Here I answer some of the most popular questions.

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Multi-Wire Branch Circuits

When the 2008 National Electrical Code (NEC) introduced 210.4(B) entitled "Disconnecting Means," this new requirement for multi-wire branch circuits drove many questions related to the application of handle ties in the industry. This requirement has also driven more use of field applied handle ties. The application of handle ties on two one-pole circuit breakers must be performed correctly as the lack of attention to details could cause you to apply the product outside of its rating. Two one-pole circuit breakers can be tied together with an approved handle tie but you must pay close attention to the markings and listing of the products to ensure that the breakers are not applied outside of their rating.

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