Lighting Transformers

Quick choosing guide

1. Size the load: add fixture watts and pick a transformer with about 20-30 percent headroom (for example, 180W load -> 300W transformer).
2. Choose tap voltage: use multi-tap 12-15V to keep far fixtures near 11-12V on long runs.
3. Plan control: pick dusk-to-dawn photocell, astronomic timer, or Wi-Fi control for schedules and overrides.
4. Select enclosure: stainless for coastal or high exposure; powder-coat for standard sites.
5. Wire layout: use hub or T-splits and proper cable gauge (12 or 14 AWG typical) to limit drop.

Pro tips: Mount the transformer vertical and above grade with a drip loop, land 120V on a GFCI protected circuit, and aim for about 11-12V at the farthest fixture. Group similar run lengths together, upsize cable on long pulls, and label each circuit inside the enclosure for easy service.