Changing Circuit Breakers:The Power Transfer Kit is supplied with a combination of 15- and 15-amp circuit breakers. Pay Attention:The Power Transfer Kit only works on 110V. It is not compatible with 220V. Blance the Load:To maximize the efficiency of your generator, divide appliance circuits and others requiring higher wattage between adjacent circuit selector switches of the transfer switch so that a usage balance is achieved between the opposing legs of the generator power. Where to Install:The size of Power Transfer Switch is 13 1/4 x 8 x 4 3/4 inches. The conduit is approximately 18 inch with the clamps. It is recommended to install it in a close area to your breaker panel. What You Can Get:1×Power Transfer Switch;1×Conduit;1×Power Cord;3×Cable Clamps;1×Installation Manual;1×User Manual;We also provide One Year Limited Warranty.