Article 511 - Commercial Garages, Repair and Storage

the article 511 section of the chapter 5 test

Article _____ contains the wiring requirements for service and repair operations in connection with self-propelled vehicles in which volatile flammable liquids or flammable gases are used for fuel or power.

(C) 511

Parking garages used for parking or storage shall be permitted to be unclassified locations.

(A) True

In major and minor repair garages, where vehicles using Class _____ liquids or heavier-than-air gaseous fuels (such as LPG) are repaired, hazardous area classification guidance is found in Table 511.3 (C).

(A) 1

In major repair garages where ventilation is not provided, any pit or depression below floor level shall be a Class I, Division _____ location.

(A) 1

For each floor area inside a minor repair garage where ventilation is not provided and Class I liquids or gaseous fuels are not transferred or dispensed, the entire area up to a level of _____ in. above the floor is considered to be a Class I, Division 2 location.

(C) 18

Any pit for which ventilation is not provided below a minor repair garage floor level of a lubrication or service room is considered to be a Class I, Division _____ location.

(B) 2

Where Class I liquids or gaseous fuels will not be transferred in a minor repair garage, such location is considered to be a(an) _____ location, provided the entire floor area has mechanical ventilation providing a minimum of four air changes per hour or one cubic foot per minute of exchanged air for each square foot of floor area.

(D) unclassified

In major repair garages where vehicles using lighter-than-air gaseous fuels (such as hydrogen and natural gas) are _____, hazardous area classification guidance is found in Table 511.3 (D).

(D) repaired or stored

In major repair garages where lighter-than-air gaseous fueled vehicles, such as vehicles fueled by natural gas or hydrogen, are repaired or stored, the area within _____ in. of the ceiling is classified as Class I, Division 2 unless otherwise indicated in the Table footnotes.

(C) 18

The area used for _____ of alcohol-based windshield washer fluid in repair garages shall be unclassified.

(D) any of these

Type NM cable can be installed above a Class I location in a commercial garage.

(B) False

Fixed electrical equipment installed in spaces above a Class I location in a commercial garage shall be _____.

(D) located above he level of any defined Class I location or identified for the location

A permanently mounted luminaire in a commercial garage, located over lanes on which vehicles are commonly driven, shall be located not less than _____ ft above floor level.

(B) 12

Underground wiring below Class I locations in a commercial garage shall be installed in _____.

(A) threaded rigid or intermediate metal conduit

In commercial garages, Type PVC conduit, Type RTRC conduit, and Tye HDPE conduit shall be permitted where buried under not less than _____ ft of cover.

(B) 2

Battery chargers and the batteries being charged can be located in any area of a commercial garage.

(B) False

In commercial garages, GFCI protection for personnel shall be provided as required in 210 (B).

(A) True