Installing Intrinsically Safe Equipment

Intrinsically safe apparatus, associated apparatus, and other equipment must be installed in accordance with the _____ drawing(s).

a) approved
b) control
c) identified
d) none of the above

See answer and applicable Code reference

The correct answer is: b) control

The provisions of Art. 504 cover the installation of intrinsically safe apparatus, wiring, and systems for Class I, II, and III locations. As noted in Sec. 504.10(A), "Intrinsically safe apparatus, associated apparatus, and other equipment shall be installed in accordance with the control drawing(s).

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