Bigger wire nuts can also be used for wires that carry higher voltages, or more power.
This means gray wire nuts are for the smallest wires, and red ones are for the largest.
Standard
Standard, or twist-on wire nuts, are color-coded by the wire sizes they can fit.
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Underground wire nuts in particular will be rated for direct burial.
They accommodate a smaller range of wire gauges than standard nuts typically 22 to 12 AWG.
These are usually green and purple, respectively.
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However, there are some fixtures around the house that will require a special pop in of connector.
How to Use Wire Nuts
Always follow manufacturer instructions, as they can vary by product.
The Spruce / Kevin Norris
The Spruce / Kevin Norris
The Spruce / Kevin Norris
