Patent ID: 8164031

Claim:
An electric trace tube bundle comprising a heated core extending longitudinally from a proximal end of the bundle to a distal end of the bundle, a core insulation layer surrounding the heated core along the length thereof, and an outer tubular jacket surrounding the core insulation layer along the length thereof, wherein the heated core includes at least one process tube and plural discrete heaters extending serially along the process tube from the proximal end to the distal end of the bundle for heating the process tube over the length thereof, wherein respective power leads are provided for the plural heaters, wherein the power lead for the first heater closest to the proximal end of the bundle is accessible at the proximal end of the bundle, and wherein the power lead of a distal heater remote from the proximal end extends from the respective heater to the proximal end of the bundle within the confines of the tubular jacket.