The Four Pillars of NEC Chapter 3

The Four Pillars of NEC Chapter 3

The correct application of Chapter 3 wiring methods is based on a group effort.  

Four NEC Articles form the basis for correctly applying Chapter 3 wiring methods. You can’t use just Art. 344 and hope your rigid metal conduit (RMC) installation won’t have Code violations. At least three of these four Articles will also apply. Last month, we looked at one of those four (Art. 300). Now we’ll look at the other three:

• Article 310

• Article 312

• Article 314

When you run RMC, of course the raceway must conform to Art. 344. However, the co

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