A 240V, single-phase motor has a nameplate full-load current of 30 amperes. Per NEC 430.52 and Table 430.52, the maximum inverse time circuit breaker size for this motor is:

• 30 amperes (equal to FLC)
• 60 amperes (30A × 200%)
• 100 amperes (30A × 333%)
• 75 amperes (30A × 250% = 75A — use standard size not exceeding)