scrub12
Member
- Location
- Cleveland, OH
- Occupation
- Electrical Engineer
Is a NEMA-1 or NEMA-12 JOA selector switch considered a simple apparatus? Can it be used with I.S. wiring in a CI, D1 area?
504.4 Equipment.
All intrinsically safe apparatus and associated apparatus shall be listed.
Exception: Simple apparatus, as described on the control drawing, shall not be required to be listed.
504.4 Equipment.
All intrinsically safe apparatus and associated apparatus shall be listed.
Exception: Simple apparatus, as described on the control drawing, shall not be required to be listed.
