Compressor Wire Size Calculator
Find the minimum wire size for your compressor.
Motor & Site Information
Distance from panel to compressor.
For ambient temperatures above 122 °F, consult CAS.
Results
Recommended minimum wire size
0
- Motor amp draw
- 0.0 A
- Minimum wire ampacity
- 0.0 A
- Maximum wire current
- 0.0 A
- Voltage drop at 100 ft
- 0.00 V 0.00% of supply voltage
Before you use this estimate
This calculator is not a substitute for a licensed electrician. Before installation, have a licensed electrician confirm the wire size, breaker size, and installation against your compressor’s nameplate and manual and your local electrical code.
Notes:
- Some rotary screw compressors have additional motors for the cooling fans that must be considered when sizing the electrical system.
- For ambient temperatures above 122 °F, consult the factory.
- Voltage drops greater than 3% can fall outside the operating parameters of electrically driven equipment.
- If supply voltage could fall below approximately 207 V on 208–230 V packages, a 200 V motor is required.
Based on 2011 NEC Article 430, Part III: 430.22(A), Tables 430.248, 430.250, 310.15(B)(16), 310.15(B)(2)(a), and Chapter 9 Table 9.
