Don,
You are right. I thought that is what I said one disconnect for two panels the 10% was to qaulify what a power panelboard was. (Disconnect) meaning: disconnect means inside or outside of the panels. 408.16B The overcurrent protective device shall be located within OR at any point on the supply side of the panelboard. 408.15 States that one panelboard will not have over 42 overcurrent devices inside it, not counting those provided for in the mains. This restricts how many overcurrent devices in a panel not how many panels. So since the NEC does not state you CAN NOT have more then one panelboard, the limit then falls to the size of the main overcurrent protective device supplying the panelboards based on thier amperage size. For example 1 or more panelboards with a rating of 200 amps must have a 200 amp main. 1 or more panelboards with a couple of 400 amp and 1-200 amp must be served by a 200 amp main.
Dan.
Doc,
I believe 408.16 in the 2002 NEC is the same as 384-16 in the 1999 NEC except for one line stated above about where the overcurrent device shall be located.
Dan
(Remember I'm not a doctor or inspector just an instructor which is probably the lowest on the "telephone/power pole" uhh totum pole)
