Top 5 Engineering Red Flags Developers Should Catch Before Permitting

Not all plan sets are created equal. In my 17 years in commercial solar, I've seen thousands of designs. Most pass permit review, but many fail the "constructability test." Here are the top five red flags that signal your engineering partner might be missing the mark.

1. Generic "Typical" Details

If your plan set is full of "typical" details that don't match the actual site conditions, it's a sign of a template-driven approach. AHJs are increasingly rejecting sets that don't show specific conduit routing, exact equipment mounting locations, and site-specific structural attachments. If it looks like a copy-paste job, the AHJ will notice too.

2. Missing or Incomplete Calculations

Arc flash, short circuit, and voltage drop calculations aren't just "nice to haves"—they are required by code and critical for safety. If these are missing or provided as a generic summary without the underlying data, you're at risk of a major correction round or, worse, an unsafe installation.

3. Inconsistent Labeling and Schedules

The single-line diagram, the site plan, and the equipment schedules must all tell the same story. If an inverter is labeled "INV-1" on one sheet and "PV-INV-01" on another, it signals a lack of quality control. These inconsistencies lead to RFIs from the field and confusion during inspection.

4. Disregard for Local Amendments

Every jurisdiction has its own "flavor" of the NEC. Some require specific disconnect locations, others have unique labeling requirements, and many have structural amendments for local wind or snow loads. If your engineer isn't documenting these local nuances, your permit will bounce.

5. Lack of Field-Aware Design

Does the design account for HVAC units, roof drains, and existing electrical clearances? If the layout looks perfect on a clean CAD sheet but ignores the reality of a crowded commercial roof, your installation crew will be the ones paying for the redesign in the field.

The Jolt Difference

We don't do "typical." Every Jolt plan set is built from the ground up for the specific site and jurisdiction. We catch these red flags before they ever leave our office, so you don't have to catch them at the permit desk. This rigorous approach is why we're experts at navigating AHJ requirements and ensuring Arizona project success.

Ready to eliminate the red flags in your design and avoid the real cost of rework? Book a call with our team today to get your project moving.