What Gauge Wire Should I Use For Outdoor Lighting

When it comes to outdoor lighting, choosing the right wire gauge is essential for ensuring the safety and longevity of your lighting system. The wire gauge, measured in American Wire Gauge (AWG), indicates the thickness of the wire and its ability to carry current. Using the wrong wire gauge can lead to voltage drop, overheating, and even electrical fires.

The appropriate wire gauge for outdoor lighting depends on several factors, including the length of the run, the voltage of the system, and the number of fixtures being used. The following table provides some general guidelines for wire gauge selection based on the length of the run and the amperage of the fixture:

Run Length (feet)	Fixture Amperage	Recommended Wire Gauge
0-50	0-1	18 AWG
50-100	1-2	16 AWG
100-150	2-3	14 AWG
150-200	3-4	12 AWG
200+	4+	10 AWG or larger

In addition to the wire gauge, you should also consider the type of insulation used on the wire. For outdoor lighting, it is recommended to use a wire that is rated for outdoor use and has a UV-resistant coating. This will help protect the wire from the elements and prevent it from degrading over time.

Finally, always follow the manufacturer's instructions when installing outdoor lighting. The manufacturer will provide specific wire gauge recommendations for their fixtures, and it is important to follow these recommendations to ensure the safety and proper operation of your lighting system.