AI for Electricians — Code and Load Calc Memory

Updated January 2026 | 8 min read

You bid a panel upgrade, but can't remember if this municipality requires AFCI protection on all circuits or just bedrooms. Your notes from the last inspection are on a job sheet somewhere in the truck. By the time you find them, you've already given the customer a number that might be short by six breakers.

Every AI tool resets between conversations. It doesn't know the service entrance configuration at that address, which circuits you already upgraded, or that the inspector there cares about conduit fill ratios more than most.

Claude Code with Obsidian gives your AI a file that persists. Panel schedules, load calculations, code requirements by jurisdiction, inspector preferences, supplier part numbers—stored once in plain text, available every conversation. No subscription. No cloud upload. One markdown file that remembers the job specifications you spent an hour documenting.

What Electricians Need AI to Remember

Panel layouts differ by property age and previous work. The 1970s house has a split-bus panel with no main disconnect. The 1990s build has a 200-amp service but the subpanel is only 100. The new construction has a smart panel with per-circuit monitoring. You photograph these, but photos don't cross-reference with load calculations or parts lists.

Circuit mapping takes time. You label everything during service calls—which breaker feeds the garage, where the junction boxes are, which circuits share neutrals. Lose that map and you're tone-tracing from scratch next visit.

Code requirements shift by location and adoption year. The city follows NEC 2020, the county is still on 2017, and the township has local amendments about generator interlocks. You know this because you work there weekly, but AI doesn't unless you write it down.

Equipment specs matter for compatibility. That Square D panel takes QO breakers, not Homeline. The Leviton dimmer needs a neutral wire. The Lutron system requires the Pro Hub, not the standard one. Generic advice fails when parts aren't interchangeable.

The Load Calculation Problem

Service upgrades require load calcs based on square footage, appliances, HVAC, and future additions. You run the numbers, but six months later when the customer wants to add a hot tub, you're re-doing the math instead of updating an existing calc.

Derating factors depend on conduit fill, ambient temperature, and wire bundling. The six-conductor run in the attic needs adjustment for 130°F conditions. The twelve-wire bundle to the subpanel reduces ampacity. Your file holds the specific derating you applied so you don't recalculate from scratch.

Panel capacity isn't just about the main breaker. It's about available spaces, continuous loads, and the 80% rule. You know that 200-amp panel is effectively full even though the breaker math says otherwise. AI needs the actual circuit list to give useful advice.

How the Memory System Works for Electricians

You create a markdown file in Obsidian. Inside: customer addresses with panel schedules, circuit maps, load calculations, code notes by jurisdiction, inspector quirks, equipment specs, and supplier contacts. Plain text format, readable by you and by Claude.

Claude Code reads this file at the start of every conversation. You mention a property, and Claude already knows the service entrance size, the existing panel brand, the last upgrade date, and which circuits are on AFCI.

When you finish a job, you update the file—circuits added, panels replaced, load calc revised, inspection notes. Next time you bid work at that address, the information's ready. No truck rummaging, no photo scrolling, no hoping you remember correctly.

The structure scales. Solo electrician? One file holds everything. Multi-person crew? Separate files for jobs, equipment inventory, code references, and apprentice training notes. Claude navigates all of it because it's organized folders and markdown syntax.

Panel Schedule Template

Each property gets a section with service entrance size, main panel details (brand, model, amperage, spaces used, spaces available), subpanel info if present, and circuit-by-circuit breakdown. Include breaker sizes, wire gauges, and what each circuit feeds.

Note existing issues. The aluminum wiring in the bedrooms. The double-tapped neutral bar. The missing GFCI protection in the bathrooms. When you return for additional work, you know what needs attention beyond the current scope.

Track upgrade history. The panel was replaced in 2019. Circuits 12 and 14 got AFCI breakers in 2022. The subpanel was added for the garage in 2023. This timeline matters for warranty coverage and code compliance during inspections.

Code Requirements by Jurisdiction

Your file holds local amendments and inspector preferences by municipality. City of Raleigh requires AFCI on all 15A and 20A circuits. Durham allows tandem breakers in residential panels; Chapel Hill doesn't. Wake County inspector wants wire nuts covered with tape; the city inspector doesn't care.

Generator interlock rules vary. Some jurisdictions allow them, some require transfer switches, some mandate specific brands. Your notes prevent you from bidding a solution that won't pass inspection.

EV charger installations have load calc requirements and permit needs. The city wants a dedicated 50A circuit with GFCI protection. The township allows load management systems to avoid service upgrades. Claude pulls these rules from your file instead of giving generic NEC answers.

Equipment Specs and Compatibility

Breaker compatibility isn't universal. Square D QO and Homeline aren't interchangeable. Siemens and Murray used to be compatible but newer models aren't. Your file lists panel brands by property so you stock the right parts before heading to the job.

Smart switches need neutral wires, load minimums, and hub compatibility. The Lutron Caseta won't work with the Leviton app. The C-by-GE requires 2.4GHz Wi-Fi. The Inovelli needs a Z-Wave hub. You document this so you're not troubleshooting compatibility issues onsite.

Wire and conduit specs vary by application. That 200A service needs 2/0 copper or 4/0 aluminum, minimum 2-inch conduit. The subpanel feed is 4AWG copper in 1.25-inch EMT. Your notes hold the exact configuration so material orders are accurate.

Supplier and Parts Sourcing

Wholesale pricing varies by supplier. Platt gives better rates on Square D. Greybar stocks more Leviton. Graybar has same-day will-call. Your file tracks which supplier to call for which parts.

Specialty items need lead time. The 400A meter base takes a week. The 3-phase disconnect is special order. The smart panel requires dealer registration. Your notes flag this during estimating so you don't promise timelines you can't meet.

Truck stock inventory lives in the file. You have twelve 20A AFCI breakers, eight 15A GFCI outlets, and five boxes of 12/2 Romex. Claude checks stock before suggesting a parts run, saving trips to the supply house.

Inspector Notes and Permit History

Each inspector has patterns. One flags missing staples within 12 inches of boxes. Another measures every conduit fill. A third checks panel clearances with a tape measure every time. Your file holds these quirks so you pre-address them before calling for inspection.

Permit numbers and inspection dates matter for records. The 2022 panel upgrade permit was #E2022-4567, inspected and approved May 15. When the customer needs documentation for refinancing, you pull it from your notes instead of calling the city.

What This Costs vs. What It Saves

Setup is $997 one-time. You get Claude Code configured, Obsidian installed, and a starter file template for electrical contracting. No monthly fees. No per-user charges. Your job histories and code notes stay on your machine, accessible even without internet.

Compare that to one wasted trip because you brought QO breakers to a Homeline panel. Or one callback because you forgot the customer's panel is maxed out and needs expansion. Or one permit rejection because you missed a local amendment.

The system pays for itself when you stop recalculating loads for properties you've already serviced. It pays again when parts orders come from documented panel brands instead of guesswork. It keeps paying every time you reference inspector notes before calling for final.