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HAZARDOUS (CLASSIFIED) LOCATIONS |
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Hazardous Location Equipment |
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Sealing fittings are designed to be filled with a chemical compound after the
wires have been pulled. As the compound hardens, it seals passageways for dusts and gases.
As shown in the figure to the left, in each conduit run entering an enclosure "for switches, circuit breakers, fuses, relays, resistors, or other apparatus" which may produce arcs, sparks, or high temperatures within Class I locations, conduit seals shall be placed as close as practical and in no case more than 18 inches (457 mm) from such enclosures. Again, consult the National Electrical Code for specific rules for the use of seals. |
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