関連ワード:  single phase vs 3 phase power    single phase vs 3 phase power supply    single phase vs 3 phase power lines    single phase vs 3 phase power cost    single phase vs 3 phase power consumption    single phase vs 3 phase power formula    1 phase vs 3 phase power    single phase or 3 phase power    single phase and 3 phase power formula    single phase and 3 phase power supply