Question on section 500.7 Protection Techniques:
My question pertains to the following text highlighted below:
If we are in a Class 1 Division 2 location with adequate ventilation (6 exchanges per 1 hour) and we have combustible gas detection sensors that are rated Class 1 Division 2, can the electrical equipment (sensors, solenoid valves, limit switches, motors, etc.) be unclassified (general purpose)?
I am looking for supporting text and specific documentation if so and or text that states it cannot be done.