Electrical Code Calculators

Professional electrical calculations for NEC and CEC. Get precise results for voltage drop, conduit fill, load calculations, grounding, and more.

NEC 2023 / CEC Tables
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Voltage Drop Calculator

Calculate voltage drop for electrical circuits per NEC 2023 Article 210.19(A)(1) and 215.2(A)(1). Supports single-phase and three-phase circuits with conductor recommendations.

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NEC 2023 ArticleNEC 2023 Article+2 more
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Voltage Drop Calculator

Calculate voltage drop for electrical circuits per NEC 2023 Article 210.19(A)(1) and 215.2(A)(1). Supports single-phase and three-phase circuits with conductor recommendations.

Code References:

NEC 2023 ArticleNEC 2023 Article+2 more
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Conduit Fill Calculator

Calculate maximum number of conductors in conduit per NEC Chapter 9. Supports various conduit types and conductor combinations.

Load Calculation Tool

Calculate electrical loads for residential and commercial applications per NEC Article 220. Includes demand factors and load calculations.

Grounding Conductor Sizing

Size equipment grounding conductors and grounding electrode conductors per NEC Article 250. Includes Table 250.122 and 250.66 calculations.

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