WBM Smart 45A Power Switch with the 1-way high power is best for use in homes & offices. This Power Switch is suitable for use for the Water & AC pumps. Power Switches are easy to install in your homes. Do the wiring according to the mentioned steps. Read the manual for the proper wiring of the power switch in your home. During the installation of the 45A power switch in your homes, be sure to cut the electricity off for safety purposes.