Verify the transaction before it becomes a revenue or compliance problem.
Zero Wave tests commercial EV charging events with attention to kWh quantity, pricing, display behavior, recorded evidence, and field conditions, led by Derrick Espinoza, California Licensed Service Agent #36738.
California Licensed Service Agent
Derrick Espinoza
License #36738
- Agency
- CDFA Division of Measurement Standards
- Expiration
- Expires 6/3/2031
Licensed for California Weights & Measures Service Work
Derrick Espinoza holds California Service Agent License No. 36738 through the California Department of Food and Agriculture, Division of Measurement Standards. Zero Wave brings weights-and-measures discipline to commercial EVSE testing, transaction accuracy review, field documentation, and compliance readiness.
License information applies to Derrick Espinoza individually. Business registration, scope of work, standards, and jurisdictional requirements may vary by service type and location. Final compliance determinations remain with the applicable authority having jurisdiction.
EVSE testing connects the meter, the display, the price, and the record.
A charger can power a vehicle and still have commercial transaction problems. Accuracy testing focuses on what the customer buys and what the operator can document.
What EVSE testing is
EVSE testing verifies the commercial charging transaction: the energy delivered, the price basis, the total charge, the visible display, and the record retained by the system.
Why accuracy matters
When electricity is dispensed as vehicle fuel and used as the basis for sale, the charger becomes part of the trust infrastructure between customer, operator, and regulator.
What documentation changes
A good field test creates a record that can support owner review, service coordination, retest planning, and inspection preparation.
What gets checked during commercial EVSE testing.
Scope varies by charger type, jurisdiction, equipment, and site conditions, but the commercial transaction is the center of the work.
AC and DC testing share the same trust goal, but the field realities differ.
Level 2 programs often involve many distributed ports. DC fast charging adds higher-power planning, connector considerations, and higher-value transactions.
AC Level 1 / Level 2
Common at workplaces, apartments, parking lots, campuses, hotels, fleets, and retail destinations. Testing often emphasizes inventory control, visible display behavior, pricing, and repeatable documentation across many ports.
DC Fast Charging
High-power sites need careful test planning, connector review, access coordination, transaction records, and retest readiness after software or hardware changes.
A clear package for owners, operators, and compliance teams.
Zero Wave documents the transaction and the field conditions around it so the next step is visible.
- Site intake review
- EVSE inventory summary
- Field test plan
- Accuracy test results
- Pass/fail notes
- Marking and display observations
- Security seal and audit trail observations where applicable
- Photo documentation
- Retest recommendations
- Compliance-ready documentation package
Commercial charging teams that cannot afford guesswork.
From one site to a multi-location rollout, the work is built for teams that need trustworthy kWh transactions.
Gather the evidence before the field window opens.
Bring charger inventory, make/model/serial numbers, installed dates, firmware notes, pricing method, network contact, site access instructions, and available photos.
Common questions
Short answers for owners and operators planning commercial EVSE testing.
Ready to verify the transaction?
Send the charger list, site address, and urgency. Zero Wave will help map the next clean step.