WireGaugeCalc Free calculator · NEC cited · works offline
60 Amp Wire Size 75 Degrees
60 amp wire size 75 degrees is quick with WireGaugeCalc, since you enter the load and material and it reads the right NEC column.
The calculator uses the 75 degree termination column of NEC 310.16, so it returns 6 AWG copper or 4 AWG aluminum for a 60 amp circuit.
So you size the feeder or branch to the temperature your terminals are actually rated for.
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.
Why the 75 degree column matters for a 60 amp conductor
Most breakers and lugs are rated for 75 degree terminations, so that column sets the legal ampacity even on 90 degree insulation.
In the 75 degree column 6 AWG copper carries 65 amps, so it covers a 60 amp load with margin.
Aluminum carries less current per size, so 4 AWG aluminum is the matching size.
What the 60 amp sizing depends on
The calculator reads the table once you set these values:
- Load entered as 60 amps
- Termination temperature set to 75 degrees
- Copper result of 6 AWG
- Aluminum result of 4 AWG
- NEC 310.16 as the ampacity source
- An optional voltage drop check for long runs
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
What size copper wire is good for 60 amps at 75 degrees?
6 AWG copper is rated 65 amps in the 75 degree column, so it carries a 60 amp load. Confirm the breaker and lug ratings and check the current NEC with your local authority having jurisdiction.
Can I use the 90 degree column instead?
Only for derating, since the final size is limited by the lowest-rated termination, usually 75 degrees. The calculator keeps the result at the 75 degree column when terminals require it.
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.