PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
The Latest
Watts to Kilowatts Conversion: W to kW Calculator + Chart (2026)
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. Watts to Kilowatts: Calculator,...
kVA to Amps Calculator: Single-Phase & Three-Phase Conversion (2026)
kVA to Amps: Calculator & Conversion Guide Single-phase and three-phase full-load current at any voltage — with NEC...
mA to Amps Conversion: Milliamps to Amps Calculator + Chart (2026)
mA to Amps Conversion: Calculator, Formula & Chart Convert milliamps to amps (and back) instantly — with NEC...
Wire Ampacity Calculator (NEC 310.16): Copper & Aluminum by Gauge
Interactive NEC 310.16 ampacity calculator: applies the 125% continuous-load rule, ambient temperature correction, and bundling adjustment to find...
Generator Sizing Calculator: Running + Starting Watts to the Right kW
Interactive generator sizing calculator with a build-your-own load list: running watts plus largest starting surge plus 25% headroom,...
Solar Panel Sizing Calculator: How Many Panels Does Your Home Need?
Interactive solar array sizing calculator: monthly kWh, peak sun hours, and system efficiency in; array kW, panel count,...
Battery Runtime Calculator: Ah to Hours With DoD & Inverter Losses
Interactive battery runtime calculator: capacity in Ah or Wh, derated by depth of discharge and inverter efficiency, divided...
Voltage Drop Calculator: NEC 3%/5% Rule, Formula & Wire Size Charts
Interactive voltage drop calculator with NEC 3%/5% guidance. Single-phase and three-phase, copper and aluminum, with circular-mil tables, worked...
Off-Grid Battery Bank Sizing Calculator: kWh, Amp-Hours & Autonomy Days
Interactive battery bank sizing calculator: daily kWh, autonomy days, DoD, and inverter efficiency in — bank kWh, amp-hours,...
Solar Payback Calculator: Payback Period & 25-Year Savings (2026)
Interactive solar payback calculator: system cost, incentives, production, and utility rate in — simple payback, 25-year savings, and...
EV Charger Circuit Calculator: Breaker & Wire Size per NEC 625 (125% Rule)
Interactive EV charger circuit calculator: charger amps to breaker and wire size under the NEC 625 125% continuous-load...
Service Entrance Load Calculator: NEC 220 Standard Method (Sq Ft + Appliances + HVAC)
Interactive NEC Article 220 standard-method load calculator: square footage, appliances, range, dryer, HVAC, and EV charging in —...
Conduit Bending Calculator: Offset Multiplier & Shrinkage Math (10°/22.5°/30°/45°)
Interactive conduit offset bending calculator: multiplier, shrinkage, and mark spacing for 10°, 22.5°, 30°, and 45° bends —...
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...
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...
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...
Federal Solar RFP Response Template Library - Section L/M Compliance, Past Performance, and Bid Package Structure
Federal Solar RFP Response Template Library - SF-33 to Past Performance to BABA Cert Every federal solar solicitation...
GSA Schedule Roadmap for Electrical and Solar Suppliers - Multiple Award Schedule Application, Award, and Task Order ...
GSA Schedule Roadmap for Electrical + Solar Distributors and the Contractors Who Sell Through Them A distributor-perspective walkthrough...
BABA Compliance for Electrical and Solar Equipment - 2 CFR 184, the 55% Rule, and How to Source Compliant Product
BABA Build America Buy America Compliance Guide for Electrical & Solar Equipment A distributor's field manual for infrastructure...
HVAC Contractor Pallet Freight and LTL Guide: Hazmat Routing, DOT Compliance, and Landed Cost Economics
How refrigerant and HVAC parts actually move through the freight network -- and how contractors cut $1,500-4,000 per...
Commercial HVAC Refrigerant Compliance for Facility Managers: 40 CFR Part 82, Leak Repair Thresholds, and Penalty Avo...
A facility manager's operating manual for EPA Section 608 compliance -- recordkeeping, leak-repair triggers, and the audit trail...
HVAC Service Tools Brand Selector: Fieldpiece vs Testo vs Fluke Digital Manifolds, Gauges, and Leak Detectors
Which digital-manifold ecosystem earns its price, which brand your senior techs will actually use, and how to standardize...
Refrigerant Recovery Equipment Buying Guide: Bacharach vs CPS vs Fieldpiece vs Yellow Jacket vs Appion
Which recovery machine actually pays for itself, which is A2L-ready for R-454B, and how to think about recovery-machine...
PES Refrigerant Subscription Program: Recurring Pallet Delivery for HVAC Contractors
Quarterly pallet delivery, locked contractor pricing, priority hazmat routing, and cash-flow-friendly cylinder deposits.
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Wholesale Solar Equipment & Complete Energy Solutions | PES Supply
Last Updated: September 2026 • A Buyer's Overview for Contractors, EPCs, Developers, and Facility Teams Most electrical and energy projects don't fail on the big decisions — they stall on...
Wholesale Solar Equipment & Complete Energy Solutions | PES Supply
Last Updated: September 2026 • A Buyer's Overview for Contractors, EPCs, Developers, and Facility Teams Most electrical and energy projects don't fail on the big decisions — they stall on...
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This Week in Power & Solar — October 20, 2026
The $0.38/W module price floor lands Dec 4, China's export rebate is gone, NEC 2026 rewrites generator shutdown rules, and standby demand keeps climbing.
This Week in Power & Solar — October 20, 2026
The $0.38/W module price floor lands Dec 4, China's export rebate is gone, NEC 2026 rewrites generator shutdown rules, and standby demand keeps climbing.
