EV Charging: Buyer's Guides, Circuit Sizing & Chargers
Level 2 charging is an electrical project first and a gadget purchase second. The charger itself is the easy part; the questions that stall installs are all upstream — panel capacity, breaker size, wire gauge, and whether a 60-amp circuit is even available in a 100-amp panel. This hub organizes PES Supply's EV charging content around those questions: how many amps your panel can spare, NEMA 14-50 plug-in vs hardwire, what the NEC 125% continuous-load rule does to your breaker and wire size, and which networked chargers justify the premium. Start with the buyer's guide, run your circuit through the free EV charger circuit calculator, then check the ChargePoint and Wallbox brand guides for networked-hardware details. The shop links below jump to in-stock Level 2 chargers and accessories at wholesale pricing — and because we are an electrical supplier first, we stock the breakers, wire, conduit, and disconnects to complete the install in one order. Contractors: one PO covers the EVSE and the electrical rough-in. The guides here are written from that supplier perspective — they name the NEC sections an inspector will cite, the load-calculation steps that decide 40 vs 48 vs 60 amps, and the hardware differences between a basic plug-in unit and a networked charger with load management. If you are bidding multi-unit or fleet work, the same principles scale; the circuit calculator handles the per-unit math.
Start here
Level 2 EV Charger Buyer's Guide 2026: Amperage, NEMA 14-50 vs Hardwire →
The complete Level 2 spec walkthrough — the amperage decision, NEC electrical requirements, plug-in vs hardwire tradeoffs, load management, and what actually matters on a residential or light-commercial quote. Read this before choosing hardware.
Circuit & Install Guides
The electrical side of EV charging — breaker sizing, outlet wiring, and the 125% continuous-load rule that drives every EVSE circuit.
- Level 2 EV Charger Buyer's Guide 2026 — Amperage, NEMA 14-50 vs hardwire, and full electrical requirements — start here before buying hardware.
- How to Wire a 240V Outlet — The outlet behind most plug-in EVSE installs — NEMA configurations, breaker selection, and wire gauge.
- How to Size a Circuit Breaker — NEC 125% continuous-load rule applied to EV charging — the math that decides 40 vs 50 vs 60 amps.
Tools
Free calculators — size the EV circuit and the breaker correctly the first time, with NEC rules built in so there is nothing to memorize.
- EV Charger Circuit Calculator — Charger amps to breaker size, wire gauge, and panel-capacity check in one pass — built on the NEC 125% rule.
- Breaker Sizing Calculator — NEC 125% Rule — Continuous-load breaker sizing with standard NEC 240.6(A) sizes and wire pairing.
Brand Guides
Networked and smart charger deep-dives — hardware specs, software features, and the total-cost math behind subscription-free vs networked EVSE.
- ChargePoint Brand Guide — Home Flex through commercial networked stations — the largest charging network's hardware.
- Wallbox Brand Guide — Pulsar Plus and smart-charging features — bidirectional-ready hardware at home prices.
Shop EV Chargers
Level 2 home chargers, commercial units, and accessories in stock at wholesale pricing — plus the breakers, wire, and disconnects to finish the circuit in the same order.
- EV Chargers — All — The complete EVSE catalog — portable through commercial.
- Level 2 Chargers — 240V residential and light-commercial units.
- Home EV Fast Chargers 240V — Higher-amperage home units for faster overnight charging.
- EV Charger Accessories — Mounts, holsters, cables, and adapters.
- Wallbox — Pulsar Plus and Wallbox smart chargers.
Why contractors source from PES Supply. We are a wholesale supplier, not a content farm — every guide on this page exists because we sell and support the equipment it covers. That means real model numbers, real warranty terms, and honest limitations instead of affiliate-listicle rankings. Order through any collection link and you get contractor pricing, consolidated freight on multi-pallet orders, and a support line staffed by people who can read a spec sheet.
Get a wholesale quote. Adding EV charging to a home, shop, or fleet lot? Send us the panel schedule and vehicle list — we'll spec charger amperage, breaker, wire, and any load-management hardware in one quote. Request a quote →
Portlandia Electric Supply stocks generators, solar, battery storage, EV charging, and electrical supplies at wholesale — browse all collections or explore our other hubs: Generators · Solar · Battery Storage · EV Charging · Electrical.