Kopperfield

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United States
Bend, OR
Kopperfield

⚡️ Less paperwork, more progress. Smarter software for electrical load calcs, line diagrams, panel schedules, and more. Trusted by inspectors.

Loved by electricians. Built for the real world. Make load calcs, diagrams, and permit paperwork easy, accurate, and fast. Get started at kopperfield.com.

08/29/2026

⚡Kopperfield now automatically runs both permitted methods for every duplex and shows you when a lower load is available under NEC 220.85.

Instead of running a second calculation by hand, you can:
✅ Compare both permitted methods automatically
✅ See the lower load in VA and amps
✅ Choose which value to use
✅ Get the applicable NEC code section cited on your final calculation

A few amps can be the difference between an existing service working or needing an upgrade. Now you can see the permitted options without doing the math twice.

🔗 Read the full update on the Kopperfield blog.

08/18/2026

⚡ Instead of spending hours on manual load calcs, Raynor Services uses Kopperfield to complete professional calculations on-site to build trust with homeowners, and win more jobs.

Less time on paperwork. More confidence at the estimate. More jobs won.

See how Raynor uses Kopperfield in the field. 👷‍♂️

👉 Read the full case study at kopperfield.com/blog

08/14/2026

⚡ We just launched our new fault current calculator, and it works like the rest of Kopperfield: fast, clean, and built for contractors.

Calculate available fault current (AFC) for common residential and commercial voltage and phase configurations using the point-to-point method.

📊 Start from utility data, or calculate source from kVA and %Z
🏷️ Name every point in the chain — meter, transformer, panel
📱 Works on desktop, mobile, or tablet
📄 Branded PDF for SCCR checks and NEC 110.24
👥 Save to your dashboard for revisions or sharing

Unlimited fault current calculations comes with Commercial Pro, along with commercial load calcs, diagrams and panel schedules.

Try it free 👉 https://www.kopperfield.com/fault-current-calculator

08/07/2026

We love hearing how contractors are using Kopperfield in the field. ⚡

From load calculations and diagrams to panel schedules and permit submissions, Kopperfield helps contractors save time, streamline workflow, and close more jobs.

Thank you to our customers for sharing their experiences with us!

07/31/2026

Every EV charger project starts with the paperwork.

For Nu-Trend EV & Electrical Services, that means creating a load calculation and single-line diagram for every permit submission.

Before Kopperfield, each diagram took 20–30 minutes to draw by hand. Now, Juan starts from a template, updates the project details, and has permit-ready documentation in minutes.

By creating reusable templates for their most common EV installations, Nu-Trend has cut single-line diagram time by up to 80%, helping the team move projects from estimate to permit approval much faster.

See how Nu-Trend is streamlining EV permit documentation with Kopperfield.

Read the full case study:
https://www.kopperfield.com/blog/nu-trendev

03/10/2026

We love working with teams like Elex who are always looking for ways to raise the bar for their customers. Better tools, better installs, better experience.

Address

2900 Clearwater Drive
Bend, OR
97703

Website

https://www.kopperfield.com/

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