PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
Generator Install Specification Guide for Electricians
Generator Install Specification Guide for Electricians (7-2000 kW) Standby generator specification, ATS selection, fuel-line sizing, exhaust routing, load calculations, NEC 700/701/702 code compliance, and the Generac, Kohler, Cummins, and Caterpillar SKUs stocked...
Read the featured article →Solar
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ChargePoint vs Wallbox vs Enphase IQ EV Charger: 2026 L2 Head-to-Head
Three of the most-specified commercial L2 platforms compared spec-by-spec — power output, load management, solar integration, warranty, and...
Pallet Deals + Wholesale Bulk Pricing — Contractors, Installers, Resellers
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Electrical Conduit Types: PVC vs. EMT vs. RMC for Solar Installations
Pick the wrong conduit for a solar job and you find out at inspection — or worse, three...
Surge Protection for Solar Systems: SPD Sizing and Installation Guide
Surge Protection for Solar Systems: SPD Sizing and Installation Guide Type 1 vs Type 2 vs Type 3...
Batteries & Storage
View all Batteries & Storage →New batteries & storage coverage is in the works — browse all batteries & storage articles →
Generators
View all Generators →
Generator Install Specification Guide for Electricians
Generator Install Specification Guide for Electricians (7-2000 kW) Standby generator specification, ATS selection, fuel-line sizing, exhaust routing, load...
NEC Wire Sizing Guide: Ampacity Charts for Solar and Generator Installations
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. NEC Wire Sizing Guide:...
Electrical & Code
View all Electrical & Code →
EV Charger Installer Certification Guide
EV Charger Installer Certification Guide (EVITP, NABCEP, Manufacturer) How electrical contractors become certified EV charger installers — EVITP...
Motor Control Selector for Electrical Contractors
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Commercial Panel Upgrade Contractor Guide
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Louisville Electrical Contractor Supply Guide
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
HVAC
View all HVAC →New hvac coverage is in the works — browse all hvac articles →
Industry Desk
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Commercial EV Fleet Electrification Buyer Guide: TCO, Infrastructure, and Deployment Timeline
Fleet electrification pencils by year 3 for Class 1–4 fleets when the infrastructure is sized right. Full buyer...
NEVI Compliance for EV Charging Deployments: The 2026 Field Guide
The National Electric Vehicle Infrastructure program funds up to 80% of DCFC deployments — but only if you...
Contractor Safety and PPE Buying Guide 2026: Arc Flash, Fall Protection, Cut, and Respiratory
OSHA and NFPA 70E in practice: arc-rated clothing by cal/cm² incident energy, harness and SRL selection, cut-A rating...
Wire, Cable & Conduit Distribution: THHN, THWN, XHHW, MC, EMT, RMC, PVC — Southwire, Encore, Cerro | PES Distribution
Building wire (THHN, THWN-2, XHHW-2), service cable (SER, USE-2, UF-B), MC cable, and conduit (EMT, IMC, RMC, PVC...
The Latest
EV Charger Installer Certification Guide
EV Charger Installer Certification Guide (EVITP, NABCEP, Manufacturer) How electrical contractors become certified EV charger installers — EVITP...
Industrial Cabinet + Enclosure Selection Guide
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Service Entrance Equipment Multi-Brand Comparison
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Motor Control Selector for Electrical Contractors
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Commercial Panel Upgrade Contractor Guide
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Louisville Electrical Contractor Supply Guide
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Electrical Contractor NEC Code Compliance Library
Electrical Contractor NEC Code Compliance Library (NEC 2023) The 40 NEC 2023 articles commercial electrical contractors reference on...
Level 2 vs DCFC Charger Selection for Commercial Sites: The Dwell-Time Rule
The L2 vs DCFC decision reduces to one variable — how long the vehicle sits at your site....
Load Management for EV Charging Sites: The Engineer's Field Guide
Dynamic load management (EVEMS) is what lets EV sites run on a constrained service without a utility upgrade....
ChargePoint vs Wallbox vs Enphase IQ EV Charger: 2026 L2 Head-to-Head
Three of the most-specified commercial L2 platforms compared spec-by-spec — power output, load management, solar integration, warranty, and...
Commercial EV Fleet Electrification Buyer Guide: TCO, Infrastructure, and Deployment Timeline
Fleet electrification pencils by year 3 for Class 1–4 fleets when the infrastructure is sized right. Full buyer...
NEVI Compliance for EV Charging Deployments: The 2026 Field Guide
The National Electric Vehicle Infrastructure program funds up to 80% of DCFC deployments — but only if you...
EV Charging Site-Prep Distributor Guide: The Whole BOM, Not Just the Charger
PES Supply is a full-line distributor for EV site prep — transformer, switchgear, feeders, chargers, load management, and...
Contractor Tool Buying Guide 2026: Cordless Platforms, Testers, Benders, and ROI-First Kit Building
Battery platform economics, per-crew tool packages, test equipment thresholds, and specialty tool ROI. Milwaukee vs DeWalt vs Makita...
Contractor Safety and PPE Buying Guide 2026: Arc Flash, Fall Protection, Cut, and Respiratory
OSHA and NFPA 70E in practice: arc-rated clothing by cal/cm² incident energy, harness and SRL selection, cut-A rating...
Fasteners and Anchors for Electrical Installations: Contractor's Complete Selection Guide
Substrate-first fastener selection for electricians. Concrete, block, drywall, wood stud, steel stud, unistrut. Pull-out math, coating for corrosion,...
Contractor Consumables Subscription Program: Auto-Reorder Math for Electrical and Mechanical Trades
Wire nuts, tape, fasteners, blades, and marking paint on a scheduled drop. Cadence sheets, SKU baseline, freight math,...
Pallet Deals + Wholesale Bulk Pricing — Contractors, Installers, Resellers
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
LED Lighting Distributor: Lithonia, Cooper, Hubbell, RAB, WAC, Sylvania, Feit, Ledvance
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Wire, Cable & Conduit Distribution: THHN, THWN, XHHW, MC, EMT, RMC, PVC — Southwire, Encore, Cerro | PES Distribution
Building wire (THHN, THWN-2, XHHW-2), service cable (SER, USE-2, UF-B), MC cable, and conduit (EMT, IMC, RMC, PVC...
Motor Control: Starters, VFDs, Contactors — Square D 8536, Eaton Freedom, Siemens SIRIUS, Schneider Altivar | PES Dis...
Sizing motor starters (NEMA vs IEC), spec'ing VFDs (Schneider Altivar, Eaton PowerXL, Siemens SINAMICS), and picking the right...
Load Center + Meter Combo Selector: Residential Meter Mains, Commercial Switchgear, Utility Approval | PES Distribution
Residential meter mains, commercial switchgear, amp-rating bands, main-lug vs main-breaker, indoor vs outdoor NEMA ratings, and utility-approved meter...
Circuit Breakers: Square D vs Eaton vs Siemens vs GE — QO / BR / QP / THQL and Powerpact / Series C / Sentron / Spect...
Head-to-head comparison of residential (QO, BR, QP, THQL) and commercial molded-case (Powerpact, Series C, Sentron, Spectra) circuit breakers...
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Solar Panels Generators Batteries EV Chargers Circuit Breakers Charge Controllers Commercial SolarBlog posts
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String Inverter vs Microinverter vs Power Optimizer: How the Architecture Changes
Last Updated: September 2026 • A Technical Comparison for Installers, Contractors, and System Owners Every grid-tied solar system has to convert DC power from the panels into AC power the...
String Inverter vs Microinverter vs Power Optimizer: How the Architecture Changes
Last Updated: September 2026 • A Technical Comparison for Installers, Contractors, and System Owners Every grid-tied solar system has to convert DC power from the panels into AC power the...
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Low-Light Solar Performance: Which Panels Produce More Energy on Cloudy Days?
Last Updated: September 2026 • A Technical Buying Guide for Cloudy and Overcast Climates A panel's datasheet efficiency is measured under Standard Test Conditions - full, direct 1,000 W/m² sunlight...
Low-Light Solar Performance: Which Panels Produce More Energy on Cloudy Days?
Last Updated: September 2026 • A Technical Buying Guide for Cloudy and Overcast Climates A panel's datasheet efficiency is measured under Standard Test Conditions - full, direct 1,000 W/m² sunlight...
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Solar Panel Pallets vs Containers: Which Buying Option Saves More Money?
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. September 2026 update: the current PES pallet line runs 555–640W — Thornova 595W (31/pallet, $164.64/panel), Thornova...
Solar Panel Pallets vs Containers: Which Buying Option Saves More Money?
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. September 2026 update: the current PES pallet line runs 555–640W — Thornova 595W (31/pallet, $164.64/panel), Thornova...
