Kopperfield
By Kopperfield Inc.
What it is
Kopperfield is permit-documentation software for electricians and electrical contractors. Its site lists tools for NEC load calculations, single line diagrams, panel schedules and fault current calculations, plus an NEC online chatbot and a camera tool, with solutions pages for residential and commercial electrical work and an inspector program. Kopperfield says it began as an EV charger installation service in 2022 and has since supported tens of thousands of load calcs, line diagrams and panel schedules.
Description based on kopperfield.com (also kopperfield.com/about), checked Oct 28, 2026. Features and pricing change, so check the vendor's site for current details.
Listed because contractors in our entries used it. Not an endorsement. Commissions and sponsorships never change which tools or entries are listed or their order. Read our disclosure.
Use cases with Kopperfield (1)
AI permit paperwork for electricians: EV charger load calcs and one-line diagrams in under five minutes
Nu-Trend EV & Electrical Services
Nu-Trend EV & Electrical Services, a Chicago-area EV charger and electrical contractor founded in 2024, submits both a load calculation and a single line diagram to the local village (AHJ) on every EV charger install so permits don't get kicked back. Project manager Juan, who also handles materials, scheduling and customer service, builds both documents in Kopperfield instead of drawing them by hand. He saved templates for his three most common jobs (a single new panel, multiple panels, and a load-management-system install), so most of each diagram is done before he starts. When a code question comes up, he asks Kopperfield's NEC chatbot which requirement applies and which code a village is using. Kopperfield reports that a single line diagram that took 20–30 minutes by hand now takes under five, about 80% less time per diagram. Figures are vendor-published and not independently audited.