Voltage Drop Calculator for Arkansas
NEC 2020 voltage drop math for EV charger installers working in Arkansas.
Arkansas EV installs frequently push past 100 ft of conductor — detached garages, parking-lot DCFC pedestals, and multifamily carport runs all add distance. NEC 2020 recommends a 3% branch / 5% total voltage-drop ceiling.
Worked example for Arkansas
A 60 A Level 2 charger at 120 ft on 240 V single-phase #6 Cu shows roughly 2.9% drop. That's below the 3% NEC recommendation, so you'd stay at #6. Arkansas's 0.82× ampacity correction is independent of voltage drop but applies on the same conductor pick.
Code & Utilities
Arkansas currently enforces the NEC 2020 edition, adopted in 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.
Major electric utilities serving Arkansas include Entergy Arkansas, Southwestern Electric Power, Arkansas Electric Cooperatives. Always verify the applicable tariff and any utility-specific requirements (CT cabinets, metering enclosures, demand limiters) at design time.
Climate & Ampacity
Plan EV feeders against a 96°F ambient in Arkansas — the resulting NEC 310.15(B) correction of 0.82× is what trims a #6 THWN-2 down to its true continuous rating. 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.
Arkansas takeaway
Voltage drop is a recommendation, not a hard NEC rule — but EVSEs throttle aggressively below ~228 V on a 240 V circuit, so customers in Arkansas will notice any drop above 5%.