If the appliance draws 30 amps you need a different type of receptacle and the cable needs to be 10- gauge.
Best gauge wire for outdoor lighting. The lower the gauge the thicker the wire will be. The further you get from the transformer and its power supply the more resistance occurs in the circuit which causes the voltage to decrease. Use a thicker 12 or 10-gauge wire to limit issues with voltage drop.
Best Selling LED Low Voltage Outdoor Landscape wire connector - everything you need to know - YouTube. 12 and 16 gauge. This flexible cord is an exception.
Smaller wire sizes are often more economical and larger wire sizes are stronger however the smaller ones will also reduce the distance of power being provided to your lights in the ground. The 8 and 10 gauge wire is mainly used to extend the distance from the transformer to your first fixture on that run. SUNVIE Low Voltage Fastlock Wire Connectors for Landscape Lighting Path Lights 12-14 Gauge Cable Connector Work with Malibu Paradise Moonrays and Other Outdoor Lighting Brands 20 Pack 47 out of 5 stars 1020.
The run is connected in a T formation to a balanced number of fixtures on each side usually no more than five lower-wattage fixtures. There are various types of wires such as outdoor wires weatherproof wires cable wires to name a few. The cost difference between this wire size and a much smaller cable is negligible and 18-gauge is about as big as you can go if you would like your wires to fit into most holders or terminals.
A good rule of thumb for selecting proper wire size is determining your wattage. Brightech Ambience Pro LED Outdoor Weatherproof Commercial Grade Lights with Hanging Sockets 48 Ft string wbulbs. The gauge or thickness of the wire directly relates to how much current it can carry.
Additionally when considering what wire gauge to use for your landscape lighting design installation its best to understand that different gauges have their own pros and cons. This is to prevent voltage drop. Even if youre planning to use low voltage requirement LED lamps youll want to use a good direct burial 12-2 gauge wire.

