Wire splices angle or are you polls are made, the distance between each raceway
entry inside the box or condo and body and the opposite wall of the box or kind a
wood-burning or not be less than - ANSWERS-6 times the trade size of the largest
raceway in a row.
Vertical runs of a metal wireway shall be securely supported at intervals not
exceeding - ANSWERS-15 feet
Metal wireways shall be supportive wire run horizontally at each end and at
intervals not to exceed - ANSWERS-5 feet
Class 1 location hazards - ANSWERS-Flammable gases and liquid-produced vapors
Class 2 location hazards - ANSWERS-Combustible dust
Class 3 location hazards - ANSWERS-Easily ignitable fibers and combustible flyings
Class 1 Division 1 - ANSWERS-Gases and vapors exist under normal conditions,
exists frequently because of repair or maintenance operations or leakage, or the
breakdown or faulty operation of equipment.
, Class 1 Division 2 - ANSWERS-Gases and papers will normally be confined within
close containers or systems which can only answer escape in the case of
accidental rupture, breakdown or abnormal operation of equipment does
normally provide and buy a positive mechanical ventilation
Class 2 Division 1 - ANSWERS-Combustible dust is in the air under normal
operating conditions, mechanical failure or abnormal operation of machinery or
equipment might cause such explosive or ignitable mixtures or quantities
sufficient to be hazardous.
Class 2 Division 2 - ANSWERS-Combustible dust due to abnormal operations may
be present in the air in quantity sufficient to produce explosive or ignitable
mixtures as a result of infrequent a functioning and handling of processing
equipment becoming suspended in the air or dust accumulations on in or in
vicinity of equipment could be sufficient to interfere with safety dissipation of
heat from electrical equipment
Class 3 Division 1 - ANSWERS-Location in which easily ignitable fibers or flyings are
handled, manufactured, or used
Class 3 Division 2 - ANSWERS-Location in which easily ignitable fibers or flying's
are stored or handled other than the process of manufacture.
Group A - ANSWERS-Acetylene, class 1 group
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