Make sure that the cable is positioned flat on the clampif you accidentally position it sideways you risk damage to the cable. Another option is just to continue the split receptical setup for the two additional outlets.
How To Wire Split Outlets
How to split electrical wire into two. Splice wires whether youre swapping in a new light fixture or adding an outlet in the garage youll probably need to reconnect wires connect a new wire to an old one or extend a few wires. Three wire cable runs from the switch to the outlet providing two hot wires to that location. You can just join all the wires at the splice i do that when the receptacle is in a really awkward location. The hot wire on the red circuit should be marked red. Use red electrical tape to mark the black wire on the red circuit at both ends. Make sure the j box you use has the appropriate entrance protection steel boxes require an insert to prevent shorting of the wires to the box plastic boxes typically have a built in wire retention device.
Avoid nicking or scratching the copper wire while removing the insulation. A split outlet is a duplex electrical outlet that is split into two sections so that each section receives power from its own separate hot or powered wire. Insert one cable into each junction box knockout through the clamp. However a small section of the outlet is physically split to separate the functions. Cut the sheathing to remove it and strip off about 34 inch of the plastic insulation from the end of each wire. This splits the outlet so each half functions independently.
The outlet body itself is not physically split. One remains on the other screw or not. Wiring a split switched outlet here a receptacle outlet is split by removing the connecting tab between the two hot terminals. The cable sheathing should extend past the clamp into the box by 14 to 12 inch. Insert a clamp with wires attached into the junction box hole and from inside the box push the included nut over the wires and onto the clamp threads. You can use a short pigtail to come off one screw and then any of a variety of splices to join the pigtail and two of the wires.
Twist the wires together then twist on the wire nuts. Tighten the screws on the clamp until the cable is securely gripped. All you need to do is remove the fin on the hot side of the outlets to split them.