A:Answer Hi there, we're so excited to hear that you're considering this fantastic combination washer and dryer for your home! That's a great question and we're happy to answer it for you. This unit must be connected to a properly grounded 120 Volt, 60 Hz., 15 Amp fused electrical supply. A time-delay fuse or circuit breaker is also recommended. We sincerely hope that this helps you prepare for your installation and would be glad to answer any other questions you may have. Keep in touch! -Eliza@Haier