BPoindexter
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- Location
- MT Vernon, WA
C1D2 Group B,C,D have motors installed. We have an internal equipment ground that is pulled in with the circuit conductors. Rigid Aluminum Conduit all the way from the MCC to the motor where we have a short section of sealtight that connect to the motor. Had a debate over the use of the 'bonding' fittings with the external jumpers installed. If there is an internal ground pulled then do we need to also install the jumper and what does the NEC exactly mean by "Liquidtight flexible metal conduit with listed fittings."?
Are the listed fitting required to be listed for bonding per 250.100 (250.92)? Or are we just talking about the fittings being NRTL listed?
Are the listed fitting required to be listed for bonding per 250.100 (250.92)? Or are we just talking about the fittings being NRTL listed?