So I have this box as part of my feeder conduit run for my detatched garage sub-panel feeder:
http://www.homedepot.com/h_d1/N-5yc...splay?langId=-1&storeId=10051&catalogId=10053
I'm not certain that it is necessary because it is connected with metal conduit to the pipes outside which are themselves already bonded, but in order to avoid my inspector raising an issue since he seems to be big on metal things being bonded, I want to bond this box.
The problem is that the box does not have a 10-32 threaded hole for a grounding screw. Which is odd because the instructions reference a kit which is sold seperately to bond the cover to the box...
Anyway, am I correct in assuming that my only option is either drill and tap a 10-32 hole or drill a hole and attach a grounding screw by using a nut on the other side?
What the box does have is 4 holes for mounting, but they're 1/4" holes and my understanding is that whatever you attach ground with can only be used for ground (which also means if I bonded the cover, I'd need a new hole for that since I couldn't use a hole for bonding and cover attachment?)
http://www.homedepot.com/h_d1/N-5yc...splay?langId=-1&storeId=10051&catalogId=10053
I'm not certain that it is necessary because it is connected with metal conduit to the pipes outside which are themselves already bonded, but in order to avoid my inspector raising an issue since he seems to be big on metal things being bonded, I want to bond this box.
The problem is that the box does not have a 10-32 threaded hole for a grounding screw. Which is odd because the instructions reference a kit which is sold seperately to bond the cover to the box...
Anyway, am I correct in assuming that my only option is either drill and tap a 10-32 hole or drill a hole and attach a grounding screw by using a nut on the other side?
What the box does have is 4 holes for mounting, but they're 1/4" holes and my understanding is that whatever you attach ground with can only be used for ground (which also means if I bonded the cover, I'd need a new hole for that since I couldn't use a hole for bonding and cover attachment?)