Practice question

What inspection criteria apply to the traffic signal controller cabinet environmental features?

Only the cabinet color
Adequate ventilation, thermostat-controlled fan operation, door gasket integrity, drainage, and environmental rating (NEMA 3R or as specified)
Only the cabinet size
Only the cabinet lock type

Answer: B — Adequate ventilation, thermostat-controlled fan operation, door gasket integrity, drainage, and environmental rating (NEMA 3R or as specified)

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