Class 1
what article covers class 1 locations?
501
scope
502.1
what article covers class 3 locations?
503
what code tells us general-purpose enclosures shall be permitted for intrinsically safe apparatus.
504.10(C)
what is article 500?
hazardous locations
Conduit Seals, Class 1, Division 1.
501.15(A)
Utilization equipment
502.135
what code requires us to use a dust tight enclosure in a class 3, division 2 location?
503.115
color coding
504.80(C)
utilization equipment for a class 3, division 1 and 2
503.135
Enclosures for windings of transformers, solenoids, or impedance coils, and resistors shall comply with 501.115(B)
501.120(B)(2)
What code will tell us about motors and generators used in a class 2, division 2 location?
502.125(B)
nonincendive field wiring
503.10(A)(4)
seals shall not be required for enclosures that contain only intrinsically safe apparatus.
504.70 exception
dry type transformers used in a class 2 location
502.100(3)
what code tells us how thick the compound seal used in a class 1, division 1 and 2 should be?
501.15(C)(3)
what code tells us that equipment listed and marked for zone 20 locations shall be permitted in class 2, division 1 locations?
502.6
what code contains the temperature limitations for dusttight enclosures?
503.5
spacing between labels shall not be more that 25'
504.80(B)
what article gives info about grounding intrinsically safe systems?
504.50
What code covers flexible cords being permitted for connection between portable lighting equipment or other portable utilization equipment and the fixed portion of their supply circuit?
501.140(A)(1)
liquid tight flexible metal conduit shall include an equipment bonding jumper of the wire type in compliance with 250.102.
502.35(B)
to reduce sparking, two or more separate surfaces of contact shall be provided for each contact conductor.
503.160(C)
the conductors from different intrinsically safe circuits have insulation with a minimum thickness of 0.01"
504.30(B)(2)
types of equipment grounding conductors in a class 2 location
502.35(B)