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(B) Class II, Division 2
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In Class II, Division 2 locations, transformers and resistors shall comply with 502.120(B)(1) through (B)(3).
(1) Switching Mechanisms
Switching mechanisms (including overcurrent devices) associated with control transformers, solenoids, impedance coils, and resistors shall be provided with enclosures that are dusttight or otherwise identified for the location.
(2) Coils and Windings
Where not located in the same enclosure with switching mechanisms, control transformers, sole noids, and impedance coils shall be provided with enclosures that are dusttight or otherwise identified for the location.
(3) Resistors
Resistors and resistance devices shall have dust-ignitionproof enclosures that are dusttight or otherwise identified for the location.
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