Use Kopperfield's free electrical load calculator and create a one-page PDF to help finish residential inspections and close customers faster.

May 3, 2024 · Residential Electrical Load Calculator, Online and Interactive provides accurate main service panel load calculations.

Free electrical load calculation tool for residential and commercial buildings. Calculate service entrance sizing, panel loads, demand factors, and ensure NEC Article 220 compliance.

Jul 15, 2025 · This article walks through the principles of service load calculation, discusses NEC requirements, and highlights best practices for commercial and industrial projects.

Dec 3, 2025 · Electrical load calculator with dual-mode analysis offering real-world running load and NEC-style service load calculations for safe home planning.

2 days ago · Understand the importance of calculating electrical load and capacity for safely updating electrical wiring systems.

Sep 23, 2025 · To determine the feasibility of adding a new large appliance to your electrical system without upgrading the panel, you need to calculate the load your current system draws. …

Professional electrical load calculator for residential service sizing. Calculate demand loads, main breaker size, and service conductor requirements using NEC standard and optional methods.

Essential for electrical contractors, engineers, and inspectors performing residential electrical design and service sizing calculations for new construction and electrical upgrades.

Jun 10, 2022 · EERE » Building Science Education » BSESC » Residential Electrical Load Calculator for the Main Service