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Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
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Electrical Distribution: Breakers, Panels, Wire & Conduit from Square D, Eaton, GE, Siemens | PES Distribution
PES Distribution is a full electrical supply house — Square D, Eaton, GE, Siemens, and Schneider Electric breakers,...
Standard Circuit Breaker Sizes: NEC 240.6 Chart (15A to 6000A)
Complete NEC 240.6 chart of standard circuit breaker sizes from 15A residential to 6000A industrial. Applications, wire sizes,...
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...
NEC Wire Sizing Guide: Ampacity Charts for Solar and Generator Installations
NEC Wire Sizing Guide: Ampacity Charts for Solar and Generator Installations PES PES Supply Editorial Team Trade expertise...
Conduit Fill Chart: Max THHN Conductors per EMT Size (NEC)
NEC Chapter 9 conduit fill chart — max THHN/THWN-2 conductors per EMT trade size, the 40%/31%/53% fill rules,...
Wire Ampacity Chart (NEC 310.16): Copper & Aluminum by Gauge
NEC 310.16 ampacity chart for THHN/THWN-2 copper and aluminum, 14 AWG to 4/0 — plus the 60°C/75°C termination...
Standard Breaker Sizes Chart (NEC): Breaker-to-Wire Sizing Guide
Every NEC standard breaker size in one chart — plus the 125% continuous-load rule, breaker-to-wire sizing, and a...
Solar Grounding and Bonding Guide: NEC 690.43, 250, and Lightning Protection
Last Updated: August 2026 • A Code Reference for Installers, Contractors, and Inspectors • Reading time: ~20 min...
Solar Disconnect and Overcurrent Protection Guide: NEC 690 Requirements Explained
Solar Disconnect and Overcurrent Protection Guide: NEC 690 Requirements Explained Solar Disconnect and Overcurrent Protection Guide: NEC 690...
Solar Wire and Cable Guide: PV Wire vs USE-2 vs THHN — Sizing, Selection, and NEC Compliance
Solar Wire and Cable Guide: PV Wire vs USE-2 vs THHN — Sizing, Selection, and NEC Compliance Wire...
Solar Permitting Guide: NEC Requirements, AHJ Approval Process, and Inspection Checklist
Solar Permitting Guide: NEC Requirements, AHJ Approval Process, and Inspection Checklist Reading time: ~18 min · Updated for...
NEC 2026 Effective: Top Changes Solar Installers Must Implement Now
NEC 2026 Effective: Top Changes Solar Installers Must Implement Now Reading time: ~9 min read Published January 15,...
NEC 2026 Preview: Key Code Changes Solar Installers Need to Prepare For
NEC 2026 Preview: Key Code Changes Solar Installers Need to Prepare For NEC 2026 Preview: Key Code Changes...
From Safety to Efficiency: The Role of Cantex Inc.'s Electrical Junction Boxes in Modern Infrastructure Projects
I've pulled wire through enough conduit to know that the junction box is where a job lives or...
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LADWP and Investor-Owned Utility RFPs - A Bidder's Guide for Electrical and Renewable Equipment Supply
LADWP and Investor-Owned Utility RFPs -A Bidder's Guide for Electrical and Renewable Equipment Supply Responding to Los Angeles Department of Water and Power, Southern California Edison, PG&E, ConEd, Duke, TVA,...
LADWP and Investor-Owned Utility RFPs - A Bidder's Guide for Electrical and Renewable Equipment Supply
LADWP and Investor-Owned Utility RFPs -A Bidder's Guide for Electrical and Renewable Equipment Supply Responding to Los Angeles Department of Water and Power, Southern California Edison, PG&E, ConEd, Duke, TVA,...
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Federal Contractor Buy-American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equip...
Federal Contractor Buy - American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equipment How Buy American Act (FAR 52.225-1) applies to electrical distribution equipment, solar modules,...
Federal Contractor Buy-American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equip...
Federal Contractor Buy - American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equipment How Buy American Act (FAR 52.225-1) applies to electrical distribution equipment, solar modules,...
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State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO ValuePoint
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO A working guide to the four cooperative purchasing programs that dominate state and local electrical procurement - Sourcewell,...
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO ValuePoint
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO A working guide to the four cooperative purchasing programs that dominate state and local electrical procurement - Sourcewell,...
