Given: A low voltage signal circuit is operated by a push button switch in a class1, division 1 hazardous location. The circuit must be installed in a way that will prevent ignighting flammable vapors. At the minimum, the circuit must be run from the switch to a location outside of the hazardous location in:

Given: A low voltage signal circuit is operated by a push button switch in a class1, division 1 hazardous location. The circuit must be installed in a way that will prevent ignighting flammable vapors. At the minimum, the circuit must be run from the switch to a location outside of the hazardous location in: