1,000+ UL Listed Transformers (7.2–34.5 kV, 25–3000 kVA) — In Stock & Ready for Immediate Shipment from Houston, CA, and Florida. Contact Us Now. 1,000+ UL Listed Transformers (7.2–34.5 kV, 25–3000 kVA) — In Stock & Ready for Immediate Shipment from Houston, CA, and Florida. Contact Us Now. 1,000+ UL Listed Transformers (7.2–34.5 kV, 25–3000 kVA) — In Stock & Ready for Immediate Shipment from Houston, CA, and Florida. Contact Us Now.