Class 1
Class 1, Division 1 and 2 locations exist where fire or explosion hazards may exist due to________________________.
Flammable gases or vapors or flammable liquids.
501.1
Class 2 Divisions 1 and 2 are locations where fire or explosion hazards may exist due to __________________.
Combustible Dust.
502.1
Class 3 Division 1 and 2 locations include locations where fire or explosion hazard exist due to __________________.
Ignitable fibers or flyings.
503.1
Parking garages used for parking or storage shall be ________________________.
Permitted to be unclassified.
511.3(A)
This article shall apply to ________________________________________________________________________________.
Motor fuel dispensing facilities, marine / motor fuel dispensing facilities, motor fuel dispensing facilities located inside buildings, and fleet vehicle motor fuel dispensing facilities.
514.1
Thickness if the sealing compound shall not be less than the trade size of the sealing fitting, however in no case shall it be less than __________.
5/8"
501.15(C)(3)
In Class 2, Division 1 and 2 locations, All boxes and fittings shall be ______________.
Dusttight.
502.10(B)(4)
Is liquidtight flexible metal conduit allowed in Class 3 Division 1 locations?
Yes, with listed fittings.
503.10(A)(3)
Underground wiring shall be installed in __________________________.
Threaded rigid metal conduit or intermediate metal conduit.
511.8
A class 1 Division 2 rating shall extend 18" vertically from the ground, and how far horizontally from a motor fuel dispensing device?
20'
Figure 514.3
Luminaires in Class 1 Division 1 locations shall be protected by ________________.
suitable guard or by location.
501.130(A)(2)
In Class2 Division 1 locations, switches, circuit breakers, motor controllers, fuses, pushbuttons, relays, and similar devices shall be provided with _________________.
Enclosures identified for that location.
502.115(A)
In class 3 locations, a luminaire exposed to physical damage shall be protected by _______________.
A suitable guard
503.130(B)
In an aircraft hangar, any pit or depression below the level of the hangar floor shall be classified as ___________________.
Class 1 Division 1
513.3(A)
100'
514.11(A)
Transformer windings, impedance coils, solenoids, and other windings that DO NOT incorporate sliding or make-or-break contacts shall be provided with enclosures. __________________ enclosures shall be permitted.
General-purpose-type
501.105(B)(4)
In Class 2 Division 2, seals shall not be required to be ______________.
Explosionproof.
502.15(4)
Storage battery charging equipment shall be located in separate rooms built or lined with ________________________.
Substantial noncombustible materials.
503.160
In a minor repair garage, where Class 1 liquids are not transferred or dispensed, the entire space within any pit belowgrade work area that is not ventilated is classified as a __________________ location.
Class 1, Division 2
Table 511.3(C)
All metal raceways, the metal armor or metallic sheath on cables, and all non-current carrying metal parts of fixed and portable electrical equipment, regardless of _____________ shall be grounded and bonded.
Voltage
514.16
Receptacles in Class 1 Division 1 and 2 shall be part of the premises wiring except as permitted by _________________.
501.140(A)
501.145(A)
No transformer or capacitor shall be installed in a ______________________ location.
Class 2 Division 1 Group E
502.100(A)(3)
The _______________ and ______________ shall not be depended on for bonding purposes.
Locknut-bushing ; double locknut-bushing
Aircraft electrical systems shall be de-energized when the aircraft is _________________________.
Stored in a hangar and whenever possible, while undergoing maintenance.
513.10(A)(1)
An overhead dispensing device is classified as a Class 1 Division 2 with 18" of the dispenser enclosure, extending horizontally in all directions down to _____________.
Grade level
Table 513(B)(1)