Four parallel sets of 4" emt stub up into the open-bottom of a 1600amp, 480/277v. panelboard and are not bonded to the enclosure. Equipment grounding conductors from the source enclosure, run in parallel with the feeder circuit conductors do terminate to the enclosure.
The panelboard is energized now and the EC asks if these feeder raceways can be bonded outside of the panelboard (in order to meet the requirements of 05NEC Sec.250.96 and 250.97 and 300.10.)
Fifteen feet upstream of the enclosure, bonding clamps would be secured to each emt. An equipment bonding jumper would be daisy-chained through each clamp and then immediately run into the raceway's 4' by 4' junction box. At this point, the jumper would be daisy-chained and split-bolted to each of the four equipment grounding conductors run in parallel with the circuit conductors.
Would this be an effective means of bonding and be code-compliant?
Thanks
The panelboard is energized now and the EC asks if these feeder raceways can be bonded outside of the panelboard (in order to meet the requirements of 05NEC Sec.250.96 and 250.97 and 300.10.)
Fifteen feet upstream of the enclosure, bonding clamps would be secured to each emt. An equipment bonding jumper would be daisy-chained through each clamp and then immediately run into the raceway's 4' by 4' junction box. At this point, the jumper would be daisy-chained and split-bolted to each of the four equipment grounding conductors run in parallel with the circuit conductors.
Would this be an effective means of bonding and be code-compliant?
Thanks