03/24/2026
Every electrician knows the difference between a job done well and a job done efficiently—and the right tools make all the difference. Tom and Tim Henry’s book is more than just a reference; it’s a practical guide built from over 67 years of real-world electrical experience.
Inside, you’ll find proven techniques and formulas that simplify your work, like the Exact K formula for voltage drop and a four-step approach to solving delta-wye transformer problems. It also covers all the everyday questions that slow you down on the job—from grounding pin orientation and smoke detector placement to pigtailing wires and sizing conduits, boxes, and wires.
With clear tables, expert guidelines on service conductor heights, ceiling fan clearances, and exit and emergency lighting, this book puts everything you need right at your fingertips. Written by electricians for electricians, it’s the kind of guide you’ll reach for again and again, saving time, reducing mistakes, and making every job easier.
https://code-electrical.com/product/905-the-electricians-reference-book/
