Power Calculator Calculator for Louisiana
NEC 2020 power calculator math for EV charger installers working in Louisiana.
Converting between kW and amps is the entry point for nearly every Louisiana EV install spec — manufacturers publish kW, but the panel, breaker, and feeder live in amps.
Worked example for Louisiana
A 11.5 kW EVSE draws roughly 48 A at 240 V single-phase, or 14 A at 480 V three-phase. Apply the NEC 2020 125% continuous-load multiplier before sizing the OCPD or feeder. Entergy Louisiana typically meters DCFC sites at the 480 V three-phase service in Louisiana.
Code & Utilities
EV installations in Louisiana are governed by the 2020 National Electrical Code, in force since 2022. That includes Article 625 (Electric Vehicle Power Transfer System) requirements: 125% continuous-load sizing on EVSE branch circuits, GFCI protection at outdoor receptacles, and provisions for energy management systems on shared circuits.
In Louisiana, you'll most often interconnect with Entergy Louisiana, Cleco Power, SWEPCO Louisiana. Each has its own service-upgrade timeline, EV rebate availability, and metering rules — confirm them before quoting commercial work.
Climate & Ampacity
In Louisiana, the 95°F summer ambient drives a 0.88× 75°C ampacity correction. Bake this into every Level 2 and DCFC conductor pick before you commit to a wire size. Because the correction is below 0.9, conductors that "look fine" on a 30°C ampacity table will not carry their nameplate current here — always derate explicitly.
Louisiana takeaway
For three-phase math, always confirm the actual nameplate power factor — DCFC equipment is usually 0.95+ but older site-rated equipment can be lower, which changes the apparent power and the conductor pick.