Based on the 2020 National Electrical Code. Part 1 of this two-part series taught you how to calculate branch-circuit loads. Now let's review how to perform feeder and service load calculations.

Explanation: For the 2026 NEC, calculations were relocated to a new article 120. 416Y/120 was also added as a standard nominal voltage as it is becoming increasingly popular in industrial and ...

The 2026 National Electrical Code introduces important updates to conductor sizing, load calculations, and safety measures that electrical pros must understand. From adding 16 AWG copper allowances ...

Why it matters: Electrical upgrades reduce hazards, improve efficiency, and enhance the learning environment for students and staff. What’s changing: The 2026 NEC reorganizes sections, updates load ...

Members of the National Fire Protection Association (NFPA) recently concluded discussions on updating Article 220.12 of the NEC (National Electrical Code) to align with a series of energy codes, as ...