LISTED * Heavy-duty marine grade construction » Designed for use with 16/3 through 10/3 cable « Dust seal keeps contaminants out ® Powerful strain relief secures.cord with stainless cites] screws WIRING INSTRUCTIONS WARNING To prevent electrocution, make sure the cable is not connected to a power source before installing a device. Failure to comply with the following Instructions could cause an electrical failure or tire. 1..Back out the recessed screws on the front face-and separate the sections, 2.