OK guys, I think I have posted a question like this on the old board and it got a lot of flack but here it goes again…
As a general rule of thumb (not carved in stone):
- Round meter box - Up to 60 amp service rating through meter
- Square meter box - Up to 100 amp service rating through meter
- Rectangular meter box - greater than 100 amp service rating through meter
This is at a glance, not to forget the rating of the wiring or other limiting factors.
Ex: if all wiring is of adequate size if I saw a round meter box and then went to the main breaker box and saw a 150 amp main breaker with nothing in between. I would suggest that this be reviewed by … for safety concerns due to the fact that the main may not trip before the meter would have problems… (I would use proper wording)