Technical Support
Single Phase Wire Size Reference
Single Phase Wire Size Reference
Wire gauge recommendations for phase converter installation
Proper wire sizing is critical for phase converter performance. Undersized wiring causes voltage drop, poor equipment operation, and potential safety hazards. Use this chart to select the correct wire gauge for your installation.
230V Single Phase Wire Size Chart
| Converter HP | Amperage (230V) | Wire Size (Copper) | Breaker Size |
|---|---|---|---|
| 3 HP | 17A | 12 AWG | 20A |
| 5 HP | 28A | 10 AWG | 35A |
| 7.5 HP | 40A | 8 AWG | 50A |
| 10 HP | 50A | 6 AWG | 60A |
| 15 HP | 65A | 4 AWG | 80A |
| 20 HP | 80A | 3 AWG | 100A |
| 25 HP | 100A | 1 AWG | 125A |
| 30 HP | 120A | 1/0 AWG | 150A |
| 40 HP | 150A | 2/0 AWG | 175A |
| 50 HP | 175A | 3/0 AWG | 200A |
| 60 HP | 210A | 4/0 AWG | 250A |
| 75 HP | 250A | 250 MCM | 300A |
| 100 HP | 315A | 350 MCM | 400A |
⚠️ Important Notes
• Wire sizes are for runs up to 100 feet. For longer runs, increase wire size to compensate for voltage drop.
• Always follow local electrical codes — NEC Article 430 covers motor circuits.
• These are general guidelines. Consult your installation manual or call us for specific recommendations.
• All installations should be performed by a qualified electrician.
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