UL 2594 is the US safety standard for AC electric vehicle charging equipment — the wallboxes and portable chargers that feed a car’s onboard charger. When an AC charger is “listed” by a nationally recognized testing laboratory, UL 2594 is the standard it has been evaluated against: its construction, its electrical protection, and how it behaves in heat, cold and wet weather. It is the document standing behind the certification mark on the chargers you can legally have installed.
Key Takeaways
- UL 2594 is the safety standard for AC EV charging equipment — wallboxes and portable chargers.
- A listing means an OSHA-recognized laboratory has evaluated the exact model against the standard.
- It works alongside sibling standards for DC equipment, connectors, adapters and personnel protection.
- Code and inspection turn on listed equipment — verify the listing covers the model and rating you are buying.
What UL 2594 Covers, at Scope Level
The standard addresses the AC supply equipment itself: the enclosure and its resistance to weather and impact, the cord and connector as a system, the protective functions that watch for faults while power flows, temperature behaviour under continuous load, and the markings and instructions the product must carry. It is written for equipment that supplies AC power to the car, where the actual conversion to DC happens inside the vehicle. That boundary is what separates it from the standard for DC fast chargers, where the conversion happens in the cabinet. Individual test values and construction clauses belong to the standard’s text and the laboratory applying it — what matters to a buyer is the scope: if the product is an AC charger, this is its standard.
UL 2594 and Its Sibling Standards
| Standard | What it covers |
|---|---|
| UL 2594 | AC EV supply equipment — wallboxes and portable chargers |
| UL 2202 | DC fast charging equipment, where conversion happens off-board |
| UL 2231 | Personnel protection systems — the shock-protection functions inside charging equipment |
| UL 2251 | Plugs, receptacles and couplers for EV charging |
| UL 2252 | Adapters between charging standards |
| UL 9741 | Bidirectional charging equipment that can export power |
A listed charger normally sits under several of these at once: the equipment standard for the unit, the connector standard for its plug, and the protection standard for its safety functions. The wider landscape of marks is mapped in our guide to EV charger certifications.
Why It Matters for an Installation
The electrical code requires EV charging equipment to be listed, and a permit inspection turns on exactly that: listed equipment, installed to its instructions, on a correctly sized circuit. That is where UL 2594 meets the installation question — an unlisted unit can fail an inspection whatever its price or power, and an insurer can take the same view after a fault. When you compare chargers, check three things: that a listing exists, that it was issued by an OSHA-recognized laboratory (UL, Intertek’s ETL and CSA all qualify — see the OSHA NRTL programme), and that the certificate covers the exact model and rating being sold. EVDANCE’s EV-ACT5006T 48A Level 2 wall charger carries ETL listing among its certifications (ETL/FCC/CE) — as with any model, verify the listing for the specific unit with the seller or the laboratory’s directory before it goes on the wall.
Frequently Asked Questions
Is UL 2594 the same as being “UL listed”?
Almost — the standard and the listing are two halves. UL 2594 is the rulebook; a listing is a laboratory’s confirmation that a specific product meets it. The laboratory does not have to be UL itself: any OSHA-recognized testing laboratory can list a product to the standard.
Does a portable charger need UL 2594 too?
Portable AC chargers are supply equipment in the same class, so yes — the standard covers cord-connected portable units as well as hard-wired wallboxes. The plug-in installation does not exempt the product from listing.
What is the Canadian equivalent?
Canada evaluates the same product class under CSA C22.2 No. 280. Chargers sold for both markets are commonly listed to the US and Canadian standards together, which is what a combined mark on the label indicates.
Related Reading
- EV Charger Certifications Explained: CE, UKCA, UL, ETL, CB
- Can I Install a Level 2 Charger Myself?
- Where Should You Install a Home EV Charger?
