Do you know how to calculate branch-circuit loads?

Mike Holt, National Electrical Code (NEC) expert discusses how to calculate branch-circuit loads in his latest article:

Article 220 of the 2020 National Electrical Code (NEC) contains the requirements for calculating demand loads for branch circuits, feeders, and services. Table 220.3 lists references for branch-circuit calculations for specific equipment in Chapter 4.

Calculate 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 [Sec. 220.5(A)].

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 [Sec. 220.5(B)].

Calculate the floor area from the outside dimensions of the building, dwelling unit, or other area involved [Sec. 220.11]. For dwelling units, the calculated floor area does not include open porches, garages, or unused or unfinished spaces not adaptable for future use.

Continue reading here:

P3 strives to bring you quality relevant industry related news.

Electrical Industry vs. COVID-19
Live Demos from the Schneider Electric Innovation ...
apc confidence eaton dependable mge experience rm integrity schneider reliability apc confidence eaton dependable mge experience rm integrity schneider reliability apc confidence eaton dependable mge experience rm integrity schneider reliability