Written by Hubbell Power Systems on July 3, 2018
Quick and Easy Tips for Installing Underground Separable Connectors
- Ensure cutback dimensions are accurate and all cuts are square.
- Do not nick or cut the shield, insulation or conductor when preparing the cable. This can lead to over-heating and dielectric failure.
- Terminate the metallic shield as close to the separable connector as possible. Do not expose more of the semi-con than is recommended.
- Wire brush conductors before inserting them into the compression barrels.
- Do not remove the inhibitor from compression barrels. It is there to help break up the oxide film and improve current transfer.
- Use the correct tool and die and make the recommended number of crimps when installing the compression connector. Rotate successive indents 90 or 180 to prevent distortion.
- Do not apply lubricant to the probe or compression lug threads.
- Use supplied lubricant or Hubbell SL150 (5oz tube); other lubricants may separate during thermal cycling and leave stuck elbows.
- Do not use silicon oil on separable connectors. Oil is for permenant installations such as splices and live-front terminators.
- Align spade contact with brushing before crimping. Do not attempt to correct misalignment by twisting the contact. This can birdcage the conductor and lead to overheating.
- Keep the follower tip clean and hand-tighten the probe into the lug to prevent cross-threading.
- Tighten the probe with supplied wrench until it yields indicating proper torque has been applied.
- Follow the directions, recommended work practices and be safe.
