DEFINITIONS - TERMINATION TERMS
QUESTIONS AND ANSWERS 2026
Class 1 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus: provides complete external leakage insulation between the cable
conductor(s) and ground; and provides a seal to the end of the cable against the
entrance of the external environment and maintains the operating design pressure, if
any, of the cable system. This class is divided into three types:
--Class 1A: For use on extruded dielectric cable
--Class 1B: For use on laminated dielectric cable
--Class 1C: Expressly for pressure-type cable systems.
Indoor Termination - Wet: - ANSWERSA termination intended for use where it is
protected from direct exposure to both solar radiation and precipitation, but is subjected
to climatic conditions that can cause condensation onto the termination surfaces.
Class 3 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus.
Indoor Termination - Dry: - ANSWERSA termination intended for use where it is
protected from solar radiation and precipitation and not subject to periodic
condensation, or other excessive humidity (90% RH or more). May be installed in air
conditioned or heated areas.
Outdoor Termination: - ANSWERSA termination intended for use where it is not
protected from direct exposure to either solar radiation or precipitation. These are Class
1A, 1B, or 1C terminations. Class 2 terminations may also qualify.
NOTE: - ANSWERSSome cables below 15 kV do not have an insulation shield.
Terminations for such cables would not be required to provide electric stress control. In
such cases, this provision would not be part of the definition.
Class 2 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus, and provides complete external leakage insulation between the cable
conductor(s).
QUESTIONS AND ANSWERS 2026
Class 1 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus: provides complete external leakage insulation between the cable
conductor(s) and ground; and provides a seal to the end of the cable against the
entrance of the external environment and maintains the operating design pressure, if
any, of the cable system. This class is divided into three types:
--Class 1A: For use on extruded dielectric cable
--Class 1B: For use on laminated dielectric cable
--Class 1C: Expressly for pressure-type cable systems.
Indoor Termination - Wet: - ANSWERSA termination intended for use where it is
protected from direct exposure to both solar radiation and precipitation, but is subjected
to climatic conditions that can cause condensation onto the termination surfaces.
Class 3 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus.
Indoor Termination - Dry: - ANSWERSA termination intended for use where it is
protected from solar radiation and precipitation and not subject to periodic
condensation, or other excessive humidity (90% RH or more). May be installed in air
conditioned or heated areas.
Outdoor Termination: - ANSWERSA termination intended for use where it is not
protected from direct exposure to either solar radiation or precipitation. These are Class
1A, 1B, or 1C terminations. Class 2 terminations may also qualify.
NOTE: - ANSWERSSome cables below 15 kV do not have an insulation shield.
Terminations for such cables would not be required to provide electric stress control. In
such cases, this provision would not be part of the definition.
Class 2 Termination: - ANSWERSProvides electric stress control for the cable insulation
shield terminus, and provides complete external leakage insulation between the cable
conductor(s).
