Fill in the blank with the appropriate answer.

Type ITC cables (instrumentation tray cable) shall not be installed with power, lighting, or Class 1 circuits that are not power limited, or non-power-limited circuits, except ___________ .

A. where terminated within equipment or junction boxes and separations are maintained by insulating barriers or other means.

B. where a metallic sheath or armor is applied over the nonmetallic sheath of the Type ITC cable.

C. as permitted by A or B.

Answer: C

As noted in 727.5 of the 2011 NEC, "Type ITC cables shall not be installed with power, lighting, Class 1 circuits that are not power limited, or non-power-limited circuits." The two exceptions to this rule read as follows:

"Exception No. 1: Where terminated within equipment or junction boxes and separations are maintained by insulating barriers or other means."

"Exception No. 2: Where a metallic sheath or armor is applied over the nonmetallic sheath of the Type ITC cable."

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.