Mechanical, Plumbing, and Electrical Code Professionals Flashcards

According to NEC Article 680, what is the minimum distance that a non-GFCI-protected 120-volt receptacle must be located from the inside wall of a permanently installed swimming pool?

Answer: 20 feet

NEC 680.22(A)(1) requires that receptacles not protected by GFCI be located at least 20 feet from the inside wall of the pool.

Under the International Mechanical Code, the maximum length of an unlined flexible metallic duct connector used for a gas range connection is:

Answer: 3 feet

IMC Section 1212.1.1 limits gas appliance flexible connectors to 3 feet (36 inches) in length to minimize the risk of mechanical damage.

Under the IPC, the distance between a water heater relief valve discharge pipe termination and the floor or receptor must be:

Answer: Not more than 6 inches

IPC Section 504.6 requires the T&P relief valve discharge pipe to terminate not more than 6 inches above the floor or receptor to prevent scalding splash.

NEC Article 250 requires that grounding electrode conductors for a residential service be sized based on:

Answer: The largest service entrance conductor or equivalent area

NEC Table 250.66 sizes the grounding electrode conductor based on the largest service entrance conductor (or equivalent area for parallel conductors).

The International Mechanical Code requires that factory-built fireplaces and their chimneys be listed and labeled and installed per:

Answer: The manufacturer's installation instructions and the IMC

IMC Section 923 requires listed factory-built fireplaces to be installed in accordance with the manufacturer's instructions and the applicable code sections.

Under the IPC, a horizontal soil or waste pipe must have a minimum slope toward the point of discharge. For pipes 3 inches and larger, that minimum slope is:

Answer: 1/8 inch per foot

IPC Table 704.1 permits horizontal drainage pipes 3 inches and larger to be sloped at a minimum of 1/8 inch per foot (1% grade).

According to NEC Article 410, a luminaire (lighting fixture) installed in a clothes closet must maintain what minimum clearance from the nearest point of a storage area when using an incandescent lamp?

Answer: Incandescent fixtures are prohibited in clothes closets

NEC 410.16(A) prohibits incandescent luminaires with open or partially enclosed lamps in clothes closets due to the fire risk from igniting stored clothing.