Panel Schedule Calculator

Panelboard and switchboard schedules, branch-circuit sizing and load calculations, NEC 2023

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Equipment

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System and ratings

Distribution space
Construction

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Design basis

Article 220
Branch circuits and energy management
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Circuits

Add a load, then set its details. Click a breaker on the drawing or a row of the schedule to edit it, or drag it on the drawing to move it.

Report details

Phase loads
Connected load by type

    Schedule

    Load calculation

    NEC checks

      Basis

      NEC 2023. Branch-circuit devices by 210.20(A), 215.3, 240.4, 240.6(A), 422.11, 422.13, 424.4(B), 430.52(C)(1), 440.22, 450.3(B) and 625.41; conductors by 210.19(A), 215.2(A), 110.14(C) and Table 310.16 with Table 310.15(B)(1)(1); equipment grounding conductors by Table 250.122; raceways by Chapter 9 Tables 1, 4 and 5.

      Load calculation by Article 220 Parts II and III: Tables 220.42(A), 220.45, 220.47, 220.54, 220.55, 220.56, and 220.50, 220.51, 220.53, 220.57, 220.60 and 430.24; EV energy management by 625.42(A), 220.70 and 750.30. Phase currents from the circuit loads at unity power factor. Panel checks by 408.30, 408.36, 408.54, 110.9, 110.10, 240.85 and 240.86. Manufacturer data from published catalogs; confirm device selections with the manufacturer.