Author: Abdul Wassay

Abdul Wassay is an Electrical Engineer with over 15 years of hands-on experience in PLC programming, SCADA systems, industrial automation, electrical troubleshooting, and renewable energy design. He publishes standards-based calculators, tool guides and product reviews on Azad Circuit Hub, citing NEC, IEC, and IEEE codes where applicable. Read Abdul's full Profile and Credentials here →

Electrical Standards | Blog
Underground Pull Box Sizing: Requirements & Best Practices
Posted on09/07/202609/07/2026
Learn underground pull box sizing requirements — burial depth, vault sizing, and drainage. Then confirm your size with our free NEC calculator.
Read More Underground Pull Box Sizing: Requirements & Best Practices
Electrical Standards | Blog
How to Size a Pull Box: Step by Step Guide
Posted on09/07/202609/07/2026
Learn how to size a pull box step by step under NEC 314.28. Follow the process manually, or get an instant, code-checked size with our free calculator.
Read More How to Size a Pull Box: Step by Step Guide
Electrical Standards | Blog
Pull Box Sizing Chart: Standard Dimensions Reference
Posted on09/07/202609/07/2026
Quick-reference pull box sizing chart for straight and angle pulls under NEC 314.28. Find standard dimensions, then confirm with our free calculator.
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Electrical Standards | Blog
Straight Pull vs. Angle Pull Box Sizing (NEC 314.28)
Posted on08/07/202609/07/2026
Learn the difference between straight pull vs. angle pull box sizing under NEC 314.28 — then size your box instantly with our free calculator.
Read More Straight Pull vs. Angle Pull Box Sizing (NEC 314.28)
Electrical Standards | Blog
NEC 314.28 Pull Box Sizing Requirements: Complete Guide
Posted on08/07/202609/07/2026
Understand NEC 314.28 pull box sizing rules — straight pulls, angle pulls, and U-pulls explained. Then size your box instantly with our free calculator.
Read More NEC 314.28 Pull Box Sizing Requirements: Complete Guide
Electrical Business | Blog
Top 10 Generation EPC Companies in Houston (2026)
Posted on08/07/202608/07/2026
Top 10 Generation EPC Companies in Houston ranked for expertise, power plant engineering, EPC project delivery, energy infrastructure, and industrial construction. Compare leading contractors for utility-scale and power generation projects in Houston.
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Electrical Business | Blog
Top 7 Oil & Gas and Midstream EPC Companies in Houston
Posted on08/07/202608/07/2026
Top oil & gas and midstream EPC companies in Houston and Texas — upstream, pipeline, and processing project specialists, evaluated by an industry engineer.
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Electrical Business | Blog
Top 12 Mining EPC Companies in Houston (2026)
Posted on08/07/202608/07/2026
The top mining EPC companies in Houston for 2026 — engineering, procurement, and construction firms specializing in mine development and processing facilities.
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Electrical Business | Blog
Petrochemical EPC Contractors: Top 10 Houston Firms
Posted on08/07/202608/07/2026
Leading petrochemical EPC contractors serving Houston’s Gulf Coast chemical corridor — plant construction, turnaround, and process engineering specialists.
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Pumps and Motors | Blog
Motor Overload Setting Table PDF & Excel Download
Posted on04/07/202604/07/2026
Download the motor overload setting table PDF free and Excel file — 3 phase motor FLA, relay setting, and range values in one printable sheet.
Read More Motor Overload Setting Table PDF & Excel Download
Relays
Overload Relay Rating Chart: Quick Reference by Motor Size
Posted on04/07/202631/08/2026
Overload relay rating chart by motor kW/HP and FLA — quick reference table for selecting the correct relay rating for 3-phase motors.
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Relays
Thermal Overload Relay Setting Guide: How to Set It Correctly
Posted on04/07/202631/08/2026
Thermal overload relay setting explained — step-by-step setting procedure, FLA-based adjustment, and common trip issues for 3-phase motors.
Read More Thermal Overload Relay Setting Guide: How to Set It Correctly
Pumps and Motors | Blog
How to Size Motor Overload Protection: Step-by-Step Guide
Posted on04/07/202604/07/2026
Learn how to size motor overload protection correctly — FLA-based sizing steps, service factor adjustments, and common sizing mistakes to avoid.
Read More How to Size Motor Overload Protection: Step-by-Step Guide
Electrical Calculators | Blog
Phase to Phase Clearance Calculator
Posted on03/07/202607/09/2026
Free phase to phase clearance calculator per IEC 61439. Enter voltage and insulation type to get minimum clearance and creepage distance instantly.
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