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What is the acceptable mounting positions for the NEMA Type S devices?

NEMA sizes 00 through 4 can be mounted horizontally or vertically in the vertical plane. Class 8903 30-200 amp electrically held lighting contactors may also be mounted horizontally or vertically in the vertical plane.

NEMA sizes 5 through 7, Class 8903 300-800 amp electrically held lighting contactors and all Class 8903 mechanically held lighting contactors must be mounted vertically in the vertical plane.



CTA-ID : 1956
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