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Rich6

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514.9 requires that all conduits entering or leaving a dispenser or a space in direct communication with the dispenser be sealed using a listed seal. A contractor contends that a seal is not required per 504.70. I do not think that the rules in 504.70 apply in this instance. We are not sealing an enclosure but rather a conduit. Am I correct in my interpretation that 514.9 stands alone?
 

jcross

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Piney Flats, TN
NEC 504.70 applies to Intrinsically Safe circuits. NEC 514.9 is specific for dispensing staions. An explosion-proof seal should be installed at the first thread after emergence.
 
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