The referenced article states that the bonding jumper around LFMC may be deleted if :
The LFMC is 6' or less in length with approved grounding fittings
The O.C. protection is 10A or less
The load is not a "power utilization load"
I cannot find the definition of "power utilization load" in the NEC. It appears to me that if the load device uses current at some voltage (any voltage) it becomes a "power utilization load". Is that a correct interpretation?
In the refinery in which I work, the typical method of wiring to solenoids (120VAC), process transmitters (24VDC), switches (24VDC or 120VAC) is with RMC to about 3' from the field device. LFMC is then used to a conduit seal, union and the field device. No bonding jumper around the LFMC and no internal ground wire in the RMC. Is this correct?
The LFMC is 6' or less in length with approved grounding fittings
The O.C. protection is 10A or less
The load is not a "power utilization load"
I cannot find the definition of "power utilization load" in the NEC. It appears to me that if the load device uses current at some voltage (any voltage) it becomes a "power utilization load". Is that a correct interpretation?
In the refinery in which I work, the typical method of wiring to solenoids (120VAC), process transmitters (24VDC), switches (24VDC or 120VAC) is with RMC to about 3' from the field device. LFMC is then used to a conduit seal, union and the field device. No bonding jumper around the LFMC and no internal ground wire in the RMC. Is this correct?