August 24, 20267 min read
Aluminum vs Copper Wire
Open calculator Grounding & conductors · NEC 310.16 Aluminum vs Copper Wire: Sizes, Cost, Safety, and When to Use Each Copper carries more per…
Read the guideThe blog
Electrical guides & answers
Practical, NEC-grounded articles that go a step past the calculators — wire and load sizing, backup power, solar, conversions, and the code behind them.
August 24, 20267 min read
What Size Wire for a 400 Amp Service?
Open calculator Wire Size · NEC 310.12 What Size Wire for a 400 Amp Service? 400 kcmil Copper (or Two 200A Runs) A 400…
Read the guide
August 24, 20268 min read
What Size Ground Wire Do You Need?
Open calculator Grounding · NEC 250.122 / 250.66 What Size Ground Wire Do You Need? (EGC vs GEC, With Charts) There are two different…
Read the guide
August 21, 20268 min read
What Size Wire for a Stove or Range?
Open calculator Wire Size · NEC 240.4(D) What Size Wire for a Stove or Range? 6 AWG Copper (50A) — and When It’s 40A…
Read the guide
August 21, 20267 min read
What Size Wire for a Dryer?
Open calculator Wire Size · NEC 240.4(D) What Size Wire for a Dryer? 10 AWG Copper (Plus 3-Prong vs 4-Prong) A standard electric dryer…
Read the guide
August 21, 20267 min read
What Size Wire for a 20 Amp Breaker?
Open calculator Wire Size · NEC 240.4(D) What Size Wire for a 20 Amp Breaker? 12-Gauge Copper (and 15 vs 20) A 20 amp…
Read the guide
August 21, 20269 min read
What Size Wire for a 40 Amp Breaker?
Open calculator Wire Size · NEC 310.16 What Size Wire for a 40 Amp Breaker? 8 AWG Copper (the Easy One) A 40 amp…
Read the guide
August 21, 20269 min read
What Size Wire for a 60 Amp Breaker?
Open calculator Wire Size · NEC 310.16 / 334.80 What Size Wire for a 60 Amp Breaker? 6 AWG vs 4 AWG, Conduit vs…
Read the guide
August 20, 20269 min read
What Size Wire for an EV Charger? 40A vs 48A, Plug vs Hardwired
Open calculator EV Charging · NEC 625.42 What Size Wire for an EV Charger? 40A vs 48A, Plug vs Hardwired Most Level 2 EV…
Read the guide
August 20, 20269 min read
What Size Wire for a 100 Amp Service?
Open calculator Service Entrance · NEC 310.12 What Size Wire for a 100 Amp Service? Service vs Subpanel (4 AWG vs 3 AWG)…
Read the guide
August 20, 202610 min read
What Size Wire for a 200 Amp Service?
Open calculator Service Entrance · NEC 310.12 What Size Wire for a 200 Amp Service? Copper, Aluminum & the 310.12 Dwelling Rule For a…
Read the guide
August 20, 20269 min read
What Size Wire for a 50 Amp Breaker
Open calculator Wire Size · NEC 310.16 / 240.4 What Size Wire for a 50 Amp Breaker? The 6 AWG vs 8 AWG…
Read the guide
August 19, 202610 min read
What Size Wire for a 30 Amp Breaker
Open calculator Wire Size · NEC 240.4(D) What Size Wire for a 30 Amp Breaker? Copper, Aluminum & the 10/2 vs 10/3 Rule A…
Read the guide
August 7, 20267 min read
AWG Ampacity Chart: Full NEC Table 310.16 Wire Gauge Amp Ratings
Preview — AWG Ampacity Chart AWG Ampacity Chart — NEC Table 310.16 Open calculator → Wire Size · NEC Table 310.16 AWG Ampacity Chart:…
Read the guide
July 24, 20269 min read
What Size Breaker for a Water Heater?
Open calculator Wiring & Circuits · NEC 310.16 / 422.13 What Size Breaker for a Water Heater? Most electric tank water heaters run on…
Read the guideNo posts in this topic yet.
Reading is step one
Now run your numbers
Every guide here has a calculator behind it. Skip the math — get the sized, code-referenced answer for your own project in seconds.