nVent Raychem Frostex Self Regulating Pipe Heating Cable 500' Spool. Each heating cable circuit requires a Frostex 9800 FlexFit plug kit. Simple to design and easy to install. Reliable and maintenance free. A two-year product warranty is available. Features of nVent 628393-000 Raychem Frostex Self Regulating Pipe Heating Cable 500' Spool Nominal Voltage: 120V; Nominal Power Output at 50F 120V: 3W per foot Ground Path Type: Braid Nominal Cable Width: 0.25" Nominal Thickness: 0.15" Spool Length: 500' Package Contents: nVent 628393-000 Raychem Frostex Self Regulating Pipe Heating Cable 500' Spool nVent 628393-000: Raychem Frostex Self Regulating Pipe Heating Cable 500' Spool