15A GFCI works with the existing three-wire PlugTail connectors creating a non-feed thru application for facility owners. At rough-in, just install the same right-angle connector for GFCI and receptacle openings.PlugTail® devices and connectors mean that device installation is the same regardless of skill level of the installer. The UL-Listed connectors are keyed to ensure proper wiring installation into each receptacle.