Calculations based on National Electric Code sections are as follows.
Description | Watts | NEC |
Area of floor space, 30 ft. x 55 ft. = 1,650 sq. ft. | 220-2(b) | |
Minimum wattage, general lighting = 1,650 x 3 = 4950 | 220-2(b) | |
Two appliance circuits | 3,000 | 220-16(a) |
Laundry circuit | 1,500 | 220-16(b) |
Total light-appliance laundry | 9,450 | 220-16(a)(b) |
NEC | Watts |
Table 220-11 demand factors | |
First 3,000 watts at 100% | 3,000 |
Remaining 6,450 watts at 35% | 2,257 |
Load requirements for above | 5,257 |
Amperes | Circuits |
Two-20 ampere appliance circuits | 2 |
One-20 ampere laundry circuit | 1 |
Three general lighting 3 15-ampere | 3 |
6 |
(Prior Code, § 152.38)