Electrical Engineering Calculations Training teaches junior electrical engineers, EITs and electrical designers how to perform the calculations used to design low-voltage commercial and industrial power distribution systems. Participants learn to calculate loads, size conductors and raceways, calculate voltage drop, select circuit breakers and fuses, size motor circuits and transformers, determine available fault current and calculate power factor correction. The course then brings every calculation together in an integrated facility design project.
This 12-hour live online instructor-led course is based on the NFPA 70 National Electrical Code (NEC). Every module is built around worked examples and practice problems, so participants learn both the engineering method behind each calculation and the code requirements that determine the final answer.
Every electrical design decision starts with a calculation. Conductor size, breaker rating, transformer kVA, equipment interrupting rating and voltage at the load are all determined by calculations, and an error in any one of them carries through to every calculation that follows. An undersized conductor overheats. An underrated breaker can fail violently during a fault. Excessive voltage drop causes motors to overheat and equipment to malfunction.
Most engineering graduates understand electrical theory, but few have applied it to a real design problem. Knowing the three-phase power formula is not the same as sizing the conductors, overload protection, breaker and disconnect for a 75 HP motor 275 feet from a motor control center, and then confirming the voltage drop and the available fault current. That practical skill is usually learned slowly on the job, often through mistakes that a senior engineer has to catch.
Engineering software performs these calculations quickly, but it cannot tell an engineer when the input data is wrong. Engineers who understand the calculations can check software results, recognize an unreasonable answer and explain their design decisions to reviewers, inspectors and clients. This is the foundation for every more advanced power system study.
The course follows the calculations an electrical engineer performs when designing a facility's power distribution system, from the individual load back to the utility transformer.
Day 1 begins with a short, practical review of electrical calculation fundamentals:
It then covers load calculations and load schedules, conductor ampacity and derating, voltage drop, conduit fill, and overcurrent protection and grounding conductor sizing.
Day 2 covers motor circuit calculations, then transformer sizing and protection, then available fault current and equipment ratings, then power factor correction. It finishes with an integrated design project in which participants calculate their way through a small industrial facility, followed by a course review and final assessment.
Participants will be able to:
MODULE 1 – ELECTRICAL CALCULATION FUNDAMENTALS
MODULE 2 – LOAD CALCULATIONS AND LOAD SCHEDULES
MODULE 3 – CONDUCTOR AMPACITY AND DERATING
MODULE 4 – VOLTAGE DROP CALCULATIONS
MODULE 5 – CONDUIT FILL AND RACEWAY SIZING
MODULE 6 – OVERCURRENT PROTECTION, BREAKER SIZING AND GROUNDING CONDUCTORS
MODULE 7 – MOTOR CIRCUIT CALCULATIONS
MODULE 8 – TRANSFORMER SIZING AND PROTECTION
MODULE 9 – AVAILABLE FAULT CURRENT AND EQUIPMENT RATINGS
MODULE 10 – POWER FACTOR CORRECTION CALCULATIONS
MODULE 11 – INTEGRATED ELECTRICAL DESIGN PROJECT
COURSE REVIEW AND FINAL ASSESSMENT
Both Days:
Start: 10:00 a.m. Eastern Time
Finish: 4:30 p.m.
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Whether you choose live online or in-person instruction, our electrical training can be customized to your needs and delivered to your team at one or multiple locations.
Our instructors will work with you to assess your team's skills and tailor the training to match your requirements.
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Download Brochure (PDF)Fill out the form below with your name and email address.
Check your email for a message with a link to your $50 discount coupon.
Use the coupon code when you sign up for the Advanced Electrical Safety Training course to save $50 off the regular price.
Register 3 delegates at the full price of $249 each and get the 4th registration free! Perfect for companies, safety departments, and teams looking to train multiple employees at once.
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