Quartz Halogen Infrared 1.5 kW (1500 Watt) Heater Lamp Bulb SK15. Tansun Sorrento 1.5. Ruby 1.5 kW (1500 watt) heater bulb. Infrared heat output 1.5 kW. The wire leads have 1 cm of exposed wire at the ends, the amount of exposed wire can be increased and shaped into a spade or loop or what ever is required.