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COUPLER TIPS

Occasionally, a nut will freeze and be difficult to turn. If it is a two part nut (not TJB), remove the six screws  holding the back ring, then gently tap the nut all around its circumference. Because of the designed looseness of the thread, there should be enough movement to loosen the  nut. If a TJB plug, slightly loosening the 6 screws and  wiggling the coupler should do it. TJB's stainless steel thread should eliminate this problem.

Couplers serve as a visible disconnect, but are not meant to be opened under load or with voltage applied. Make sure circuit breaker is open and phase conductors grounded. Do not depend on ground check circuit to open breaker.

When couplers have been separated after being energized, some residual voltage may be left on the phase leads. If the phase contacts must be touched, use earth-attached ground to discharge all contacts prior to touching them.

Good housekeeping in the form of clean insulators is mandatory at 15KV levels and desirable at all voltages. Periodic cleaning should be done on both male and female insulators. The use of Teflon insulators eliminates most insulator problems and makes cleaning a very quick and simple process.

TJB CABLE COUPLERS