220.11 must be used to calculate the minimum lighting load. The general lighting load specified in Table 220.12 for non-dwelling occupancies and the floor area determined per Sec. Lighting Load for Non-Dwelling Occupancies For dwelling units, the calculated floor area does not include open porches, garages, or unused or unfinished spaces not adaptable for future use. Ĭalculate the floor area from the outside dimensions of the building, dwelling unit, or other area involved. What if you do a calculation and get a fraction of an amp? You can round the answer to the nearest whole number, with decimal fractions smaller than 0.50 dropped. Table 220.3 lists references for branch-circuit calculations for specific equipment in Chapter 4.Ĭalculate your branch-circuit, feeder, and service loads using nominal system voltages, (e.g., 120V, 120/240V, 120/208V, 240V, 277/480V, 480V) unless other voltages are specified. Based on the 2020 National Electrical Code.Īrticle 220 of the 2020 National Electrical Code (NEC) contains the requirements for calculating demand loads for branch circuits, feeders, and services.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |