Topic: Class 2 Wiring in Cass I, Div 2 Hazardous Location

User: sirdle, Location: California

Asked on: Tuesday, April 5, 2011 at 11:25 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:50 am EDT

Question: In a Class I, Division 2 area, I often see #20 or #22 AWG twisted, shielded pair cable, installed inside conduit, supplying a 4-20 mA transmitter.If this is fed from a class 2 power supply, does 725.154(D) require the cable to be PLTC? Or does this section only apply if the cable is installed in a cable tray? (I'm assuming that the wiring is not part of a nonincendive or intrinsically safe circuit.)