Commercial charger work runs on the same licensed trade as home work, but it adds five things residential jobs rarely demand: load design across several units, three-phase sites, networked handover, a project documentation pack, and more than one decision-maker. None of them is a new trade. All of them have to be evidenced, not just claimed, because commercial clients buy proof as much as installation.
Key Takeaways
- Commercial work adds load design, three-phase sites, networked handover, documentation and multiple stakeholders — not a new trade.
- The 125% continuous-load rule scales from one charger to a site total; confirmed capacity gates the design.
- Clients buy evidence: load calculations, commissioning records and a handover pack beat claims in a bid.
- State hardware facts exactly as listed — a touchscreen is not a payment terminal, and 20–30 kW DC is not the DOT fast-charging band.
The Skill-Gap Table
| Residential habit | What commercial work adds | How you evidence it |
|---|---|---|
| One charger, one circuit | Several chargers sharing one service, designed as a total load | Load calculations from finished jobs that a reviewer can follow |
| Single-phase homes | Three-phase commercial services and three-phase hardware | Signed-off three-phase installations and per-model training records |
| Plug in and it charges | Networked chargers: access control, driver accounts, session records | A commissioning record from a live networked site you handed over |
| The homeowner decides | A facilities manager, a landlord, a tenant and a utility all touch the job | Written scopes and stage sign-offs your firm issues as standard |
| A verbal handover | A documentation pack: records, settings, certificates, who to call | A sample handover pack in your bid file, redacted from a real job |
Load Design Is the Core New Skill
At home, the arithmetic is one line: EV charging is a continuous load under the NEC, so the breaker is 125% of the charger’s current — 32 A needs a 40 A breaker, 40 A needs 50 A, 48 A needs 60 A. On a commercial site the same rule applies per charger, and then the real question arrives: what is the sum of those continuous loads against the confirmed capacity of the service? That is a design exercise, not an installation habit, and it is the one commercial clients and reviewers probe first. Our explainer on building load calculation basics sets out how capacity is assessed, and what load balancing does and does not do covers the sharing question clients always ask. Hardware helps at the margin: the EV-AC03201T shares up to 43 kW across its own two connectors from one supply, which is a stated design fact you can plan around. Whether a wider site needs a load-management platform on top of that is a project question to settle with the client and the platform provider — it is not a feature to assume of any unit.
The Hardware You Will Meet
Commercial ranges add forms a home installer may not have fitted. The EV-ACT3204PE is a 22 kW three-phase Type 2 wallbox with RFID and app, rated IP66, CE-marked — the workplace pattern. The EV-AC03201T above adds OCPP 1.6J networking and a 7-inch touchscreen; note the screen is an interface, not a payment terminal, because payment lives on the platform side — the distinction is exactly what our OCPP explainer is for. The EV-RHDC30K-L is a compact DC unit at 22 kW: honest framing matters here, because that sits below the 50–350 kW band the U.S. DOT calls DC fast charging, so experience on units of this size does not automatically read across to highway-scale DC work. Its listing does not name the DC connector variant, so confirm the variant for each job in writing before the unit is scheduled. Model files and installer supply run through the distributor program or contact us.
Frequently Asked Questions
Do I need a different licence for commercial work?
Licence classes are set by your jurisdiction, and whether commercial work sits in the same class as your residential work is a confirmation to close with your licensing authority before you bid — never an assumption to carry into a tender.
Is three-phase work a separate ticket?
That, too, is a jurisdiction question. What is not in question is the evidence: clients will ask what three-phase work you have completed and signed off, so keep the records from your first supervised jobs.
What do commercial clients actually ask for in a bid?
Proof, in this order: your licence position, your load-design work from a comparable job, a commissioning and handover sample, and your maintenance route afterwards — the routine in the commercial maintenance checklist is the shape of what they expect to continue.
Related Reading
- Adding EV Chargers to a Building: Load Calculation Basics
- OCPP Explained: What Charge Point Operators Need From EV Charger Hardware
- How Much Does It Cost to Install a Commercial EV Charging Station?
- Fleet Depot Charging: How to Size AC Chargers for Vans and Light Commercial Vehicles
