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Step 6Finishing the wiring
There are a few steps left to finish up the wiring.
You should attach a short (5") bare copper wire to the ground terminal of both the electrical outlet and the switch. These should be twisted together with the bare copper that you attached to the case of the Johnson Controller and the green wire from the extension cord. Attach a wire nut to the top to keep them together.
The other electrical connections should be made with the 2 white wires (one from the ROMEX and one from the extension cord.) Attach these to the hot and the neutral terminals on the side of your electrical outlet.
The second picture shows the electrical outlet connected and the wire nut attached to the bundle of the 4 grounding wires.
Once the connections are made, screw down the switch and the outlet into the metal box. I typically wrap the outside of outlets and switches with electrical tape when working with metal boxes for safety.
Notice that the extra ground bundle of wires is tucked neatly behind the outlet here.
I attached a rough schematic of the wiring for this project. The cyan is used to represent white wires and green for ground. Ground is sometimes just the bare copper wire and has no coating. Note that where the green ground wires crosses the black at the bottom right of the switch, this is NOT an electrical connection, just a bad schematic.
You should attach a short (5") bare copper wire to the ground terminal of both the electrical outlet and the switch. These should be twisted together with the bare copper that you attached to the case of the Johnson Controller and the green wire from the extension cord. Attach a wire nut to the top to keep them together.
The other electrical connections should be made with the 2 white wires (one from the ROMEX and one from the extension cord.) Attach these to the hot and the neutral terminals on the side of your electrical outlet.
The second picture shows the electrical outlet connected and the wire nut attached to the bundle of the 4 grounding wires.
Once the connections are made, screw down the switch and the outlet into the metal box. I typically wrap the outside of outlets and switches with electrical tape when working with metal boxes for safety.
Notice that the extra ground bundle of wires is tucked neatly behind the outlet here.
I attached a rough schematic of the wiring for this project. The cyan is used to represent white wires and green for ground. Ground is sometimes just the bare copper wire and has no coating. Note that where the green ground wires crosses the black at the bottom right of the switch, this is NOT an electrical connection, just a bad schematic.
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Sep 20, 2009. 1:55 PMevanworthington
says:
Thank you for this hack . . it will save me a good $30! One question -- do I need to use the switch? The alternative would be just unplugging the extension cord when I'm not using the fridge, right? Because the Johnson Controls has an internal swich? Thanks much, Evan
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Sep 20, 2009. 4:16 PMClemsonStuart721 (author)
says:
Correct, the switch is a complete override for the Johnson Control and definitely not a requirement. Should simplify the wiring a bit as well.
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