short circuit faulted
Member
- Location
- Columbia SC
Can anyone point me to NEC reference requiring BLG (Bonding Lug Grounding) bushings?
I see 300.4F requiring a bushing on # 4 AWG and larger conductors - & See 344.46 requiring a bushing to protect wire from abrasion when using rigid conduit - I could surmise that when using 344.60 (Rigid as ground) that the bonding lug bushing may be used to extend grounding conductor to ground bar, however as the ground bar is normally mounted to the can and rigid is normally connected through single KO not concentrict and double locknutted to the can, I beginning to wonder where & why the grounding bushing becomes a requirement, if for bonding of conduit I would think that in rigid application that is overkill / EMT perhaps - Any code clarifications on this would be greatly appreciated.
Thanks
Steve
I see 300.4F requiring a bushing on # 4 AWG and larger conductors - & See 344.46 requiring a bushing to protect wire from abrasion when using rigid conduit - I could surmise that when using 344.60 (Rigid as ground) that the bonding lug bushing may be used to extend grounding conductor to ground bar, however as the ground bar is normally mounted to the can and rigid is normally connected through single KO not concentrict and double locknutted to the can, I beginning to wonder where & why the grounding bushing becomes a requirement, if for bonding of conduit I would think that in rigid application that is overkill / EMT perhaps - Any code clarifications on this would be greatly appreciated.
Thanks
Steve