I'm confused. Some of you are saying 10 receptacles on a 20 amp circuit and some are saying 13 (in commercial occupancies). 1999 NEC table 220-13 shows that the first 10 kVA may be calculated at 100% which would allow 13 receptacles on a 20 amp circuit. 220-21(b)(2) requires that the maximum cord and plug connected load on a 20 amp circuit to be no more than 16 amps, which is 80%. This would allow 10 receptacles on a 20 amp circuit. It seems to me that these two references are in conflict with other. Can anyone clarify this for me? (By the way, most of the local inspectors in my area ask for no more than 7 receptacles on one 20 amp circuit.) As usual this is a great discussion. Even with almost 30 years in the trade I learn something here almost every day.
