Category: Electrical
Voltage Drop on Long Residential Runs, When to Upsize the Wire
When to upsize wire for voltage drop on long residential runs – the 3 percent guideline, worked examples for a detached garage and a well pump, and a free voltage drop calculator. Read more
NEC Conduit Fill, Worked Examples for EMT and PVC
Worked NEC conduit fill examples for EMT and PVC – the 40 percent rule, how to use Chapter 9 tables, and the mistakes that cause failed inspections. Includes a free conduit fill calculator. Read more
How to Look Up NEC Code Sections Fast
How to look up NEC code sections fast – reading citations, finding the right table, and using the NEC Code Lookup Hub to jump from a section number to the calculator that does the math. Read more
NEC 2023 GFCI Expansion: The Dwelling-Unit Changes Still Tripping Up Inspectors
NEC 2023 expanded GFCI requirements in dwelling units more than any previous cycle. Two years in, here are the specific 210.8 changes that still cause inspection failures – and how to design around them on a service upgrade. Read more
How to Actually Price a 200A Residential Service Upgrade in 2026
A line-item breakdown of what a 200A residential service upgrade actually costs to deliver in 2026 – materials, labor, permit, and the hidden costs that kill margin. Plus the right way to quote it so you do not lose money. Read more