How to Read Scales and Dials for Graphic Arithmetic Questions
Mastering Measurement: How to Read Scales and Dials for Graphic Arithmetic Questions Effectively knowing how to read scales and dials is a fundamental skill that separates novice technicians from seasoned professionals. For both a journeyman electrician and master electrician, this …
Show Window & Track Lighting Load Calcs (NEC 220.46)
A Master Electrician’s Guide to Show Window & Track Lighting Load Calculations (NEC 220.46) Accurately performing a show window lighting load calculation is a fundamental skill for any journeyman or master electrician working in commercial occupancies. The specific provisions for …
Designing for Wind & Snow Loads on Rooftop Solar Arrays
Designing for Wind & Snow Loads on Rooftop Solar Arrays Properly calculating for solar wind and snow loads is a critical, non-negotiable step for ensuring the safety, longevity, and code compliance of any rooftop photovoltaic (PV) installation. For the master …
How to Add, Subtract, and Multiply Fractions in Electrical Work
For electricians in the field, mastering fractions is not just an abstract mathematical exercise; it is a critical, hands-on skill essential for safety, precision, and efficiency. Strong command of fractions for electricians is fundamental to tasks ranging from physical installations, …
Calculating Conductor Ampacity in Cable Tray (NEC 392.80)
Mastering Cable Tray Ampacity Calculation: A Guide to NEC 392.80 Performing a correct cable tray ampacity calculation is a critical skill for any licensed electrician, ensuring both safety and compliance with the National Electrical Code (NEC). The process involves determining …
Feeder Sizing for Multiple Motors on a Single Circuit
Feeder Sizing for Multiple Motors: An Electrician’s Guide to NEC 430.24 Correctly performing feeder sizing for multiple motors is a critical skill for any journeyman or master electrician. Governed by the National Electrical Code (NEC), these motor load calculations ensure …
Intro to Powers of 10 for Electrical Prefixes (kilo, mega)
Intro to Powers of 10 for Electrical Prefixes (kilo, mega) For any professional journeyman electrician or master electrician, mastering electrical prefixes is not just a suggestion—it’s a fundamental requirement for safety, accuracy, and efficiency on the job. Prefixes like kilo …
PV String Sizing Calculations for Grid-Tied Inverters
PV String Sizing Calculations for Grid-Tied Inverters: A Master Electrician’s Guide Proper PV string sizing calculations are critical for designing a safe, efficient, and code-compliant solar energy system. These calculations determine the correct number of solar modules to connect in …
A Step-by-Step Guide to Residential Solar System Sizing
A Step-by-Step Guide to Residential Solar System Sizing Proper residential solar system sizing is the critical first step for any successful photovoltaic (PV) installation. Accurately sizing a system ensures it meets the homeowner’s energy needs, operates efficiently, and complies with …
Applying Demand Factors for Schools per NEC 220.86
Applying Demand Factors for Schools per NEC 220.86 A proper school load calculation is a fundamental skill for any journeyman electrician or master electrician, ensuring the safety and efficiency of a facility’s electrical infrastructure. According to the NEC code book, …
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