It is important to know which is which before beginning. Gfci load wiring diagram.
Gfci Load Wiring Electrical 101
Gfci line load diagram. Select either image to enlarge. The gfci receptacle will have line and load areas to attach your wires to. Ground fault circuit. In the following diagram the above load mentioned before ie. Protected receptacles will be connected to the gfci load side as shown below. Connecting to the line terminals only results in the outlet providing gfci protection only for that outlet.
Also inspect the load side black and white conductors for damage and make sure the ground conductor is not coming into contact with any other screws on the receptacle. About wiring to line and load on the receptacle diagram. The line terminals and the load terminals. Gfcis have two pairs of screw terminals for connecting wires. When it comes to ground fault circuit interrupter or gfci outlets there is always a question as to how to connect the wiresthis is because gfcis have two different sets of terminals. Components and devices are connected to the line terminals of gfci ie.
One pair is marked line and one is marked load. Line and load have special meaning when wiring ground fault circuit interrupter gfci outlets. This way the combo switch outlet light switch and ordinary outlet are not gfci protected. The back of these outlets are clearly marked line and load. Power is connected to the gfci line side. When you connect only to the line terminals the outlet provides gfci protection only for itself.
The line is the set of wires coming from the panel or power source the load is the wire set leaving the receptacle box to the other downstream receptacles to be controlled by the gfci. They are connected to the direct main supply.