In this video, I will be showing you the most common types of splices and joints of conductors.1. Rattail JointA splice that is used in a junction box and for connecting branch circuits is the rattail joint.To create a rattail joint, first strip the insulation off the ends of the conductors to be joined. You then twist the wires to form the rattail effect. This type of splice will not stand much stress.2. Y Splice Joint A Y splice joint, also known as a tap splice, connects a conductor to a running wire. You'll need to remove about 1.5 inches of insulation from the running wire. Take the connecting wire and tie it in a knot onto the running wire to create a knotted tap splice. Wrap the connecting wire around the running wire six more times.3. Knotted Tap JointKnotted tap junction is done by joining a branch conductor to a continuous wire called the main wire. The main wire, to which the branch wire is to be tapped, has about 1 inch of insulation removed. The branch wire is stripped of about 3 inches of insulation.The branch wire is laid behind the main wire. About three-fourths of the bare portion of the branch wire extends above the main wire. The branch wire is brought under the main wire, around itself, and then over the main wire to form a knot. The branch wire is then wrapped around the main conductor in short, tight turns; and the end is trimmed off. 4. Plain tap or Tee Joints is used to a great extent joining a tap or other conductor to a through conductor. To make the joint, skin the tap wire about 2 inches and the main wire about 1 inch. Next, the wires are crossed intersecting about ¼ inch from the insulation of the tap wire and the main wire. A hook or sharp bend is then made in the tap and about five or six turns wound around the main wire. 5. Aerial Tap JointIt is mostly used on outside work, or in locations where wires are subjected to considerable movements. It is done through looping wire to the other with large gap on the first and second loop to serve as a space when movement is needed. The rest must be loop tightly.6. Duplex Wire Splice It is used in conduit systems wherein duplex wires are used. It is done by making two western union small-tie splices adjoining together side by side. 7. Western Union Short-Tie SpliceThe Western Union Splice is made by twisting two ends of a wire together counterclockwise 3/4 of a turn each, finger tight. Then, using needle-nose pliers, the ends are twisted at least five more turns, tightly. The cut off ends are pushed close to the center wire. It is widely used in interior wiring and is done similar to western union long-tie splice. The only difference is, it is done in small length of twisted loop than long-tie.8. Western Union Long-Tie SpliceUsed extensively for outside wiring. It is done using two equal length of wire that is twisted horizontally to create a twisted loop. The remaining untwisted wire is loop around the other. This splice is similar to a western union short tie, only that the number of twist at the center and at both end are more compare to a short tie.9. Cross JointThe same application is done as in plain tap and the only difference is that this tap is a combination of two plain taps place side by side with each other.10. Wrapped Tap, Tee Joint is used on large solid conductors where is difficult to wrap the heavy tap wire around the main wire. The tap wire is bent into an L shape about ½ inches from the insulation so that it will rest along the side of the main wire. A wrapping wire is then prepared using conductors terminating beyond the bent of tap wire and up to the installation of the main conductor.