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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