Evaluate NEC Article 625 and NFPA 88A requirements before installing EV charging equipment in an existing parking garage

Steps

1. Confirm the charging equipment's listing for the intended installation location: NEC 625.52 ties the ventilation requirement to whether the equipment is listed for indoor EV charging without ventilation or listed for indoor charging that requires ventilation — where ventilation is required, it must include permanently installed supply and exhaust equipment venting directly to the outdoors, sized per the article's tables or the manufacturer's/equipment listing instructions.
2. Notify the fire protection engineer of the planned EVSE location and quantity early in design, since sprinkler system adequacy for the added fire load needs to be evaluated for enclosed/underground structures.
3. Coordinate with a mechanical engineer if ventilation modifications are triggered by the equipment's listing limitations under NEC 625.52.
4. Provide physical protection for charging equipment (wheel stops or concrete-filled bollards) per NFPA 88A's equipment-protection provisions to prevent vehicle impact damage.
5. Verify electrical branch-circuit and load calculations under NEC Article 625 account for the existing garage's electrical service capacity, not just the new EVSE circuits.
6. Confirm with the local electrical inspector which edition of the NEC has been adopted, since Article 625 requirements (including the 625.52 ventilation methodology) have changed across recent NEC cycles.