Hatch GLT900TD, 900w Staineless Steel Multitap Toroid Core Professional Transformer 12-15v for Outdoor Landscape Lighting Professional Series Landscape Light Transformers feature toroidal cores for professional results and commercial reliability. Premium components, windings, primary and secondary circuits. Professional grade low voltage outdoor lighting transformer. Large terminal blocks allow for 10 #12/2, and 8# 10/2 wire UL 1838 listed, 304 Stainless Steel, Fully encapsulated Toroidal Core - runs cooler & quieter