WireGaugeCalc Free calculator · NEC cited · works offline
60 Amp Wire Size Copper
60 amp wire size copper is fast with WireGaugeCalc, since you enter the load and termination rating and the app returns the conductor.
The app reads NEC 310.16 for copper and matches the wire to the 60, 75, or 90 degree C column.
So you can size a 60 amp feeder or circuit without guessing the gauge.
Open the calculatorSmallest conductor whose ampacity meets the load, NEC Table 310.16. Field aid only, verify against the current NEC and your local authority having jurisdiction.
Picking copper for a 60 amp circuit
Copper sized at the 75 degree C column gives 6 AWG for 65 amps, which covers a standard 60 amp load.
At the 60 degree C column you would step up to 4 AWG copper, since the lower column allows less current.
You use the column that matches the lowest rated termination, because the terminal limits the conductor.
What the copper conductor sizing tool reads
The calculator checks the inputs that set the gauge:
- Circuit load in amps
- Termination temperature column
- Copper conductor material
- Insulation type such as THHN or THWN
- Continuous load adjustment if applicable
One app for every NEC calculation
WireGaugeCalc keeps the calculations you reach for most in one place:
- Voltage drop and wire sizing for any run
- Conduit fill for EMT, PVC, and RMC
- Box fill and junction box sizing
- Ampacity and temperature derating
- Motor circuit and load calculations
- Conduit bend offsets and saddles
Built for the field, works offline
The whole app runs on your phone, so it keeps working in a basement, an attic, or a job site with no signal.
There is no account to create and nothing to load. Open it, run the number, and get back to work.
- No signup and no signal needed
- Answers in a tap, not a spreadsheet
- Same tool on phone, tablet, and desktop
Every result cites the NEC article
Each answer shows the table or formula it came from, so you can check the method and learn the code as you go.
That makes the app useful on the job and during exam prep, since the reasoning is right next to the number.
Switch the code year your job runs on
Jurisdictions adopt the NEC at different times, so you can match the calculation to the code in force:
- NEC 2017, 2020, and 2023 tables
- Copper and aluminum conductors
- 60, 75, and 90 degree C terminations
- Single-phase and three-phase systems
Run the number, then get back to work
Stop flipping through a paper book or hopping between calculator sites. Enter your values, read the code-cited answer, and move on. Free to use, no signup.
Open the calculatorFrequently asked questions
Is 6 AWG copper good for a 60 amp circuit?
Yes, 6 AWG copper is rated 65 amps in the 75 degree C column of NEC 310.16, which covers a 60 amp circuit on 75 degree terminations.
When would I need 4 AWG copper for 60 amps instead?
Use 4 AWG copper when terminations are rated only 60 degrees C or when continuous load and corrections push the required ampacity higher. Confirm the column against the current NEC and your local authority having jurisdiction.
Is WireGaugeCalc free to use?
Yes. Every calculator is free to run with no signup. A paid tier adds saved projects, PDF reports, and extra code years, but the core math stays free.
Does it work without internet?
Yes. The app runs on your device, so it keeps working with no signal on a job site, in a basement, or in an attic.
Are the results code accurate?
Results follow published NEC tables and standard formulas, and each answer shows the article it came from. It is a field aid, not a stamp of approval, so verify against the current code and your local authority before you wire anything.
Which NEC code year does it use?
You can switch between NEC 2017, 2020, and 2023, since jurisdictions adopt the code at different times. Pick the year your job runs on.