Southwire
Southwire Landscape Lighting Cable
Southwire direct-burial low-voltage cable in 12/2 and 14/2, stranded copper, on 100 ft and 500 ft spools. Atlantic Lighting stocks the gauges that cover most residential landscape runs.
Picking a gauge: voltage drop, not amperage, usually decides. 12/2 handles most runs up to roughly 100 ft at typical fixture loads; step up to 10/2 for longer runs or heavier loads, and 14/2 is fine for short taps and small zones. Direct-burial rated means no conduit required, though 6" of cover and a warning of where it's buried is always smart.
Pair with waterproof connectors. Not sure what gauge your run needs? Call (855) 274-2746.