codequestion
Banned
- Location
- MD, USA
(4) Main Bonding Jumper asWire or Busbar. Where the
main bonding jumper specified in 250.28 is a wire or busbar
and is installed from the grounded conductor terminal
bar or bus to the equipment grounding terminal bar or bus
in the service equipment, the grounding electrode conductor
shall be permitted to be connected to the equipment
grounding terminal, bar, or bus to which the main bonding
jumper is connected.
Following I am not sure about in the diagram or violate the code:
1. There is main bonding jumper from netural to gnd bar then their is also path from netural bar to conduit and conduit to enclosure and enclosure to gnd bar thru bonding jumpers creating second main bonding jumper.
2. The enclosure is bonded from neutral bar to enclosure and also thru neutral bar to conduit and from conduit to enclosure thru bonding jumpers creating two paths.
I see too many jumpers. I would bond conduits to the neutral bar and then install one Main Bonding Jumper from neutral to the ground bar. Size it per article 250.66