230-70(a) covers the entrance of service cables. It gives no footage as to how far inside a building you can take the conductors, but leaves that up to each jurisdiction, some are more than others, in VA we tend to the 5 foot rule.
Uh....is that a fire wall with the branch circuitry run through it? 300-21 says you got away with something if so. Also BOCA code if your area adheres to that, you have to seal with fire rated equivalent materials any hole you make in the fire wall.
230-6 states that a conductor encased in 2" of concrete (or Brick) is considered outside the building so you can run it as far as you like.
These are obviously not High Voltage conductors, but if they were the "National Electrical Safety Code" offers a bit tougher standard, just for your knowledge.
[This message has been edited by George Corron (edited 03-06-2002).]
Nick, I think the panel design is confusing. I believe the neutral lug only connects to the neutral bus (by running behind the line lugs). The branch ckt. neutrals on the bus tell me that it is not a corner grounded delta. Wouldn't they have to connect to the breakers if they were serving 3 phase loads? As Don said, grounded conductors can be attached to a breaker because it opens the ungroundeds also. Anyone else?
[This message has been edited by Redsy (edited 03-07-2002).]
I've never seen a Main/CB panel landed this way. It looks like an MLO panel with the neut taped white, but in the center?? Got to admit, I've not seen an MLO panel landed this way either. Charles, can you give us a manufacturer?? (Please)