Panel schedule maker (NEC load center, beta)

In an NEC project you set the spaces, breakers, poles and protection of the load center, and Avenler builds the panel schedule: for each space the circuit, the current, the protection and the L1/L2 load (VA); it prints as one sheet of the drawing set. A design aid, not a permit document; NEC mode is in beta.

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Before you start: a design aid, not a permit document

Avenler is a design aid, not a permit document. Approval of a US plan is decided by the authority having jurisdiction (AHJ) and the NEC edition actually in force, and the program's values must always be checked against the official text. NEC mode is in beta.

Load center and panel schedule from the drawing

In an NEC project the board type is load center. On the Boards page you enter the number of spaces (an even number) and the main breaker / bus rating (A); the circuits set in the drawing go there.

• A breaker is 1 or 2 pole and takes one space per pole; a 2-pole breaker gets 240 V (L1 and L2).
• For every breaker you can set the protection type: standard, GFCI, AFCI or dual function (AFCI + GFCI).
• If the circuits do not fit, the program suggests a larger number of spaces that you can set right there.

What does the panel schedule show?

The panel schedule shows, for each space:

• the circuit,
• the current and the poles,
• the protection,
• the load of phases L1 and L2 (VA).

Printing the drawing set includes it as one sheet, and the single-line diagram is also built as a load center.

Load calculation and checks

On the Boards page the dwelling load calculation (NEC Article 220) takes its inputs from the drawing and shows the working of both methods (optional and standard), with the suggested service and conductor. In an NEC project the Checks panel also runs the load center rules: too few spaces, a small main breaker, unbalanced branches. To upgrade an existing home (for example for an EV charger) use the service upgrade load calculator.

What this page does not claim

The panel schedule is built from the data entered in the drawing and is informative: it is not a permit document and does not claim NEC compliance. The values must be checked against the NEC edition in force and with the authority having jurisdiction (AHJ).

Next

The whole workflow (region, feet and inches, circuit assignment, checks, a quote in USD) is shown on the US electrical plan page; the steps are in the Designing to the NEC chapter.

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