WireGaugeCalc Free calculator · NEC cited · works offline
600 Amp Ground Wire Size
600 amp ground wire size is simple with WireGaugeCalc, since you pick the overcurrent device rating and the conductor material to read the grounding size.
It follows the equipment grounding conductor table logic, so the ground matches the breaker, not the phase conductor.
You get the copper or aluminum size in seconds, so a 600 amp feeder or service is grounded correctly.
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.
Matching the equipment grounding conductor to a 600 amp device
The grounding conductor is sized from the rating of the overcurrent device ahead of the circuit, not from the load amps.
Since the EGC must clear a fault fast, the table sets a minimum that rises with the breaker rating.
The calculator returns both copper and aluminum options, so you can match what is already in the run.
What sets the ground size on a 600 amp circuit
The tool reads the grounding conductor from a few inputs:
- Overcurrent device rating of 600 amps as the driver
- Copper or aluminum grounding conductor material
- Minimum AWG or kcmil from the grounding table
- Note when an upsize is needed for parallel sets
- Separate result for the equipment grounding conductor
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 the ground sized from the 600 amp breaker or the load?
The equipment grounding conductor is sized from the rating of the overcurrent device, so a 600 amp breaker drives the lookup even if the load draws less. The calculator uses that rating directly.
Does the ground change if I run parallel conductors?
When phase conductors are upsized for voltage drop, the grounding conductor is increased in proportion, and parallel runs follow their own rule. Verify the final size 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.