Blog & Resources
Technical articles and buying guides written by our cable engineers. Learn how to specify, select, and install industrial wire and cable with confidence.
These articles come out of recurring questions from procurement teams, electrical contractors, and engineers sourcing or specifying wire and cable for real projects. Topics span code requirements (NEC ampacity derating, voltage drop, direct burial depth), material comparisons (copper vs aluminum conductors, VFD-rated vs standard), and sourcing guidance for buyers vetting overseas manufacturers. Each guide stands on its own, without requiring prior familiarity with our catalog or terminology.
Featured Article
Voltage Drop Calculation Guide for Long Cable Runs
The exact voltage drop formula, worked examples, and NEC recommended limits - everything engineers need to size conductors correctly for long feeder and branch circuit runs.
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Silicone Rubber Wire vs PVC Wire: Which Should You Specify?
Silicone rubber wire vs PVC wire compared: temperature range, flexibility, chemical resistance, and cost — with an application matrix for choosing between them.
Read articleCable Ampacity Derating Guide: NEC 310.15 Temperature & Bundling
Full NEC 310.15 correction factor tables for ambient temperature and conductor bundling, with worked examples showing how much ampacity you actually lose.
Read articleDirect Burial Cable Requirements: NEC 300.5 Depth & Cable Types
Minimum burial depth tables, approved cable types (UF, USE, USE-2), and the most common direct burial installation mistakes under NEC 300.5.
Read articleVFD Cable vs Standard Cable: Why the Difference Matters
Running a VFD on standard THWN cable causes motor bearing failures and cable overheating. Learn what makes VFD-rated cable different and when NEC 430 requires it.
Read articleArmored Cable vs Conduit: Which Wiring Method Should You Use?
MC cable vs EMT conduit - a real-world cost and labor comparison. When NEC Article 330 permits armored cable and when conduit is the better choice.
Read articleCable Tray vs Cable Duct: How to Choose the Right System
Ladder tray, solid-bottom tray, or wireway? Learn the NEC 392 ampacity derating rules, cost differences, and which system suits your industrial installation.
Read articleCopper vs Aluminum Wire: Which Is Right for Your Project?
Copper vs aluminum conductor - a technical breakdown covering resistivity, ampacity, installation requirements, and the AA-8000 alloy that closes the reliability gap.
Read articleCable Quality Control: How to Vet a Chinese Cable Manufacturer
Five red flags to check before ordering industrial cable from China - conductor weight testing, UL iQ verification, batch vs type tests, and on-site audit essentials.
Read articleEV Charging Cable Requirements: SAE J1772, Type 2 & Conductor Specs
SAE J1772 vs IEC 62196 Type 2, Mode 2/3/4 charging levels, conductor sizing for AC/DC fast charging, and the certification standards EV charging cable must meet.
Read articlePTFE vs FEP Wire: High-Temperature Fluoropolymer Cable Selection
PTFE vs FEP insulation compared on temperature rating, chemical resistance, flexibility, and cost — with UL style numbers, application matrix, and when to use each.
Read articleSilicone Cable Temperature Guide: Ratings, UL Styles & Applications
Silicone rubber cable temperature ratings from −60°C to 200°C continuous — UL styles, IEC equivalents, chemical resistance, and why silicone beats PTFE for flexibility.
Read articleUL Cable Marking Explained: THHN, NM-B, USE-2 & NEC 310.120
Decode every letter in a UL cable type designation — T, H, HH, W, N — plus common cable type codes, voltage ratings, and the difference between UL Listed, Recognized, and Certified.
Read articleCSA vs UL Cable: Certification Marks, Standards & When You Need Both
UL vs cUL vs cULus vs CSA: what each mark means, which NEC/CEC standard applies, equivalent standard pairs (UL 83 vs CSA C22.2 No. 75), and when dual listing is required.
Read articleXLPE vs PVC Cable Insulation: Properties, Performance & Applications
Cross-linked polyethylene vs PVC: temperature limits, dielectric constant, chemical resistance, and why XLPE dominates medium-voltage cables — with a side-by-side properties table.
Read articleWire AWG Chart: Complete Reference Table with Metric Equivalents
Complete AWG-to-metric conversion table from 4/0 through 22 AWG — diameter in mm, cross-section in mm², nearest IEC size, 75°C ampacity, and resistance in Ω/km.
Read articleFire Resistant Cable Standards: BS 6387, IEC 60331 & UL 2196 Compared
BS 6387 categories C/W/Z, IEC 60331-1/-2 test conditions, and UL 2196 — what each standard tests, how mica tapes survive flames, and which rating your circuit protection system requires.
Read articleThermocouple Extension Wire Guide: Types J, K, T, E, N & Color Codes
Extension vs compensating grade, IEC 60584 accuracy classes, thermocouple type comparison (J/K/T/E/N/R/S/B), and why the IEC and ANSI color code systems are dangerously different.
Read articleHow to Select Heating Cable: Self-Regulating vs Constant Wattage
Self-regulating polymer matrix vs constant wattage vs mineral insulated: watt density calculation, pipe freeze protection sizing, ATEX/FM temperature classes, and installation accessories.
Read articleTHHN vs THWN Cable: Why Modern Building Wire Is Dual-Rated
Letter code decoding (T/H/HH/W/N), why THHN and THWN-2 merged into a single dual-rated wire, when NEC requires the 75°C vs 90°C ampacity column, and how XHHW-2 compares.
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