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How Nu-Trend draws single line diagrams in 80% less time

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July 22 2026

Nu-Trend electrician installing an EV charger

Nu-Trend EV & Electrical Services is an Illinois-based EV charger and electrical contractor. The company specializes in EV charger installations for homes and businesses, alongside general electrical work such as panel upgrades and lighting. As Illinois programs and incentives like the ComEd rebate accelerated demand for EV charging, Nu-Trend had an increasing need for faster, more efficient permit documentation workflows.

Every EV charger installation requires permit documentation, including a load calculation and single line diagram for the local village (AHJ). As project volume grew, Nu-Trend turned to Kopperfield to create this documentation in minutes instead of manually creating it by hand. The team reduced single line diagram creation time from 20–30 minutes to less than 5, streamlining permit submissions and approvals.

Nu-Trend EV & Electrical Services logo

Founded
2024

Location

Chicago Services
EV Charger

Faster permit approvals for EV projects

Keeping every project moving falls to project manager Juan, who manages permitting, materials, scheduling, submitting permits to the village (AHJ), customer service, and everything in between. As Nu-Trend’s EV installation volume grew, Juan needed a faster way to handle the permit documentation required for each job. With Kopperfield, Juan can now quickly create load calculations and single line diagrams without starting from scratch.

“I got the hang of it pretty quickly. Everything's already in there, I just plug in the details and Kopperfield builds the docs for me right away." 

— Juan, Nu-Trend EV & Electrical Services

Load calculations & line diagrams for every install

For every EV charger Nu-Trend installs, Juan prepares two documents: a load calculation and a single line diagram. Requirements vary from village to village (AHJ), so rather than guess what a given jurisdiction will ask for, he submits both on every job as best practice.

“If we're doing an EV charger install, we submit both a load calc and a one line diagram to the village. It answers a lot of their questions and makes sure the panel has capacity. We don't want to take any risk, so we send everything at once so that every permit gets approved." 

— Juan, Nu-Trend EV & Electrical Services

Submitting both a load calculation and diagram for every project is only practical because Kopperfield produces them quickly for Juan. Instead of hand-drawing diagrams and working through load calculations from scratch for each permit, he is able to complete them in minutes with Kopperfield.

Sending a complete permit packet up front keeps jobs on track toward install dates, which matters in Illinois, where weather can dictate when work like a service upgrade actually happens.

Create single line diagrams in minutes

Kopperfield generates a single line diagram in under 5 minutes, versus the 20–30 minutes it takes to draw one by hand, about 5-6x faster. For a project manager supporting growing installation volume, that hand-drawing step had become a significant bottleneck between winning a job and getting it scheduled. What was once a manual, time-consuming task is now fast, consistent, and repeatable.


“I saved tons of time. A diagram manually would usually take 20 to 30 minutes. With Kopperfield, it takes less than five." 

— Juan, Nu-Trend EV & Electrical Services

Kopperfield editor showing an EV charger single line diagram

Save time with single line diagram templates

A major part of the time savings comes from the single line diagram templates. Rather than begin each job from scratch, Juan created templates for the three scenarios he encounters most often: a single new panel, multiple panels, and a load-management-system installation. As a result, most of the diagram is complete before he begins. And because Nu-Trend's sales manager scopes each job up front (i.e. charger type, run length, conduit type, etc) the key details are already defined by the time the job reaches Juan.


“I found the three scenarios I see most often in my work and create a template for each. Now I don't have to tweak the geometry a lot. I just copy, rename it, and put in the new customer information, tweak whatever I need, and that's it." 

— Juan, Nu-Trend EV & Electrical Services

Instant NEC Chatbot and local code answers in the field

When a code question comes up in the field, Juan uses Kopperfield’s built-in NEC chatbot to quickly find and double-check the applicable requirement before submitting. This gives the team a faster way to verify code details and supplement their existing NEC resources without pausing a project to search for answers.

"The NEC Chatbot is really good. Whenever we have questions about NEC requirements or which code a village is using, we just ask it, and it helps us quickly find the answers we need." 

— Juan, Nu-Trend EV & Electrical Services

Reduce EV permit documentation time by up to 80%

Nu-Trend continues to expand its EV business alongside a steady volume of electrical work, and Kopperfield supports that momentum, reducing friction in permitting and keeping documentation fast and consistent.

  • ~80% less time per diagram: one line diagrams that once took 20–30 minutes by hand now take under five minutes.
  • 15–25 minutes saved on every diagram: a quick, repeatable workflow rather than a manual bottleneck.
  • Permit-ready packages: complete load calculation and one line diagram submissions that support approval on every job in minutes.
  • Reusable templates: saved configurations for the company's most common EV installation jobs, ready to copy and paste for the next project.
  • Code answers on demand: instant NEC and local code lookups whenever questions arise.


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