Preliminary Capacity Report
Whether the project is worth pursuing on the service you already have.
The capacity answer from your utility account's own data, reviewed by an engineer and not signed, for the decision in front of you.
- Price
- $500
- Delivered
- 2 days
- Signature
- Engineer-reviewed, not signed
No seal, so it is not submittable to an AHJ. It is the same analysis and the same numbers, for planning or a second opinion. Upgrade any time and the $500 comes off.
What You Can Decide With It
The service supports the addition.
The Answer First
Existing demand, the load you want to add, the headroom that remains and the verdict, on one page. It is reviewed by an engineer and carries no signature.
| 1 | Maximum demand, 12-month utility record | 289.4 kVA |
| 2 | Per NEC 220.87(1), line 1 × 125% | 361.8 kVA |
| 3 | Proposed new load: 6 × EV chargers, 11.5 kW ea. | + 96.0 kVA |
| 4 | Total computed load, line 2 + line 3 | 457.8 kVA |
| 5 | Service capacity, 800 A @ 480 V 3Ø | 665.1 kVA |
| 6 | Spare capacity after addition, line 5 − line 4 | 207.3 kVA |
Demand record: utility interval data, Jun 2025 to May 2026, 15-minute intervals, peak coincident with summer cooling season. Full record appended as Exhibit B.
The Calculation, Line by Line
Recorded peak, the 125% the code requires, the new load and the service rating, each on its own line. Anyone checking the work can follow it without asking us a question.
| Main breaker 800AT / 800AF, 65 kAIC | Field photo |
| Feeder conductor sizes, MDP to Panel A | Drawing E-101, 2016 |
| RTU-1 / RTU-2 nameplate ratings | Field photo |
| Conveyor control panel load | Stated by owner |
| T-1 transformer impedance | Typical, unverified |
| No PV or storage on site | Stated, confirmed by photo |
Anything unverified is marked here, and the determination does not lean on it.
Where Every Figure Came From
What was read from a photo, what from a drawing and what was stated to us. Anything unverified is marked on the page, and the answer does not lean on it.
How It Is Produced
- 01Same dayConnect your utility accountAuthorise read-only access to the account, or send 12 months of bills showing kW demand, with a photo of the panel.
- 02Day 1The panel on paperYour panel becomes a record, breaker by breaker, and the existing load is read from your recorded peak.
- 03Day 2The answerExisting demand, headroom and the verdict for the load you want to add, with every figure traced to its source.