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Code Quiz

Nov 13, 2006 10:00 PM, By Steven Owen

Q. The wiring of the emergency system in hospitals shall be mechanically protected. Where installed as branch circuits in patient care areas, the installation shall comply with the requirements of 517.13(A) and 517.13(B). Which of the following wiring methods is permitted?

1. Nonflexible metal raceways, Type MI cable, Schedule 80 rigid nonmetallic conduit. Nonmetallic raceways shall not be used for branch circuits that supply patient care areas.
2. Where encased in not less than 2 inches of concrete. Schedule 40 nonmetallic conduit, flexible nonmetallic or jacketed metallic raceways, or jacketed metallic cable assemblies listed for installation in concrete. Nonmetallic raceways shall not be used for branch circuits that supply patient care areas.
3. Listed flexible metal raceways and listed metal sheathed cable assemblies in any of the following: a. Where used in listed prefabricated medical headwalls. b. In listed office furnishings. c. Where fished into existing walls or ceilings, not otherwise accessible and not subject to physical damage. d. Where necessary for flexible connection to equipment.
4. Flexible power cords of appliances and other utilization equipment connected to the emergency system.
5. Secondary circuits of Class 2 and Class 3 communication or signaling systems.

A) 1 and 2 only
B) 2 and 3 only
C) 1, 2 and 3 only
D) All of the above

Answer: D The requirements for the mechanical protection of the emergency system shall comply with the rules outlined in 517.30(C)(3), (1) through (5).

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.

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