3M™ Motor Lead Pigtail Splice with Scotch® Linerless Rubber Splicing Tape 130C – Training

3M™ Motor Lead Pigtail Splice with Scotch® Linerless Rubber Splicing Tape 130C – Training


Protect motor lead pigtail splices by using
several types of premium electrical tapes to provide electrical insulation, mechanical
protection and an environmental seal. To do this, 3M recommends that you use Scotch
brand Varnished Cambric Tape 2510, Scotch Linerless Rubber Splicing Tape 130C, and Scotch
Premium Vinyl Electrical Tape Super 33 Plus. Once you have applied the pigtail splice connector
to the conductors, arrange the conductors so that you can better wrap each side for
an effective moisture seal. The varnished cambric tape provides important
puncture protection. Applying it adhesive side out allows quick
and easy re-entry to the connection if needed. Before this step, an electrical insulating
putty or mastic tape is often used to pad, fill and round out the sharp edges of a mechanical
connection. It also provides a smoother taping surface
and minimizes the sharp or pointed edges. In this demonstration, we won’t show this
optional step. Start wrapping the Scotch brand Varnished
Cambric Tape 2510 adhesive side out, one half inch over the cable jacket. Let the edge of the tape overlap the edge
of the previous wrap of tape. Wrap it a few inches up the conductors. Wrap the tape at an angle to cover the inside
of the Y formed by the two cables. Once you’ve covered the splice an inch up
each conductor, cut the tape with a sharp knife, thumb down. Next add some layers of rubber tape to provide
electrical insulation and a good moisture seal. Start wrapping with Scotch brand Linerless
Rubber Splicing Tape 130C. Pull the rubber tape so that is stretches
slightly. The tape should be stretched to one third
of its original width, almost to the point of breaking. Wrap to the end of the pigtail splice; wrapping
diagonally to cover the splice end. Pull the roll of tape tightly between your
fingers and pass it carefully hand to hand so that the tape is applied with moderate
tension. Once applied correctly, the tape layers fuse
together. Wrap so that the rubber tape covers half the
width of the previous layer of rubber tape. We call this method half-lapping. Wrap the rubber tape diagonally as needed
to cover the open area between the conductors where they form a Y. Continue wrapping back and forth until you
have four layers of rubber tape. To re-insulate a connection, the rule of thumb
is to buildup the tape insulation to at least one and one half times the existing cable
insulation. Start taping with Scotch brand Premium Vinyl
Electrical Tape. Pull the tape roll so that the vinyl tape
roll goes on with tension; squeezing the rubber tape below, half-lap the tape. As you did with the rubber tape, you will
need to wrap diagonally to cover the splice end. Wrap to the conductors, covering the rubber
tape and taping at least one inch on to the rubber jacketing. Add layers of vinyl electrical tape to provide
physical protection for the rubber tape, some additional electrical insulation and to help
reduce the chance of shifting caused by motor vibration. Also, wrap diagonally to cover the space between
the conductors where they formed a Y. You may need to build up layers to completely
cover it. Once you have applied a minimum of four half-lapped
layers, let the tension out of the tape in your hand. Cut with a sharp blade and wrap the remaining
end. When applied correctly, these layers of tape
will help protect the motor lead splice. But if you need to remove the splice, just
splice through the tape layers with a sharp blade. They should peel off easily since the layers
will adhere to each other and not to the splice.

5 Replies to “3M™ Motor Lead Pigtail Splice with Scotch® Linerless Rubber Splicing Tape 130C – Training”

Leave a Reply

Your email address will not be published. Required fields are marked *