Solderless Connections
Solderless connections join electrical components without solder.
A great variety of terminals are available, these are noninsulated
These are insulated terminals & butt splices.
Terminal identification
FORKS ?SPADES ?
EYES ?BUTT SPLICES ?
Dependable connections can be made without solder.
Making good solderless connections.
1. Determine correct connector2. Select correct tool3. Prepare wire4. Set connector into crimper5. Insert wire into connector6. Crimp fully7. Crimp strain relief if required8. Install finished connection
Selecting the correct connectorUse the one that best matches demands of the installation.
Select the correct tool
The right strippers and crimpers are essential for good connections.
These are NOT crimpers !
Prepare the wire
Select right stripper size and strip insulation without cutting wire strands.
Set connector into crimpers
Setting connector into crimper
INSTERT wire into connector
Fully crimp connector
Crimp a strain relief if available
Crimping step 1
Crimp the conductors for a secureelectrical connection.
Crimping step 2
Crimp the insulation for a Strain Relief.
INSTALL the connector
SECURE installation
Select correct size of splice.
Strips wire(s) to be spliced
Insert wire into only one end first
Fully insert & crimp splice at one end first
Insert & Crimp other end
Two types of crimps
Different types of crimpers can do the same job.
Different jaws to crimp with
Two types of crimping action
Second type of crimping action
Butt splice crimped two ways
Wire Nuts
Common wire connections in industrial and commercial wiring.
Steel threads inside a plastic shell.
Inside, coned threads twist and hold wires together.
1. STRIP
2. INSERT
3. TWIST
4. TUG
FOUR steps for wire nuts
Strip two or three wires that are to be connected.
Insert wires into wire nut
Twist nut until wires are tight.
Tug on wires to make sure connection is secure.
Securing wires
It is important to secure wiring for safety and dependability.
Wire bundle mount
Wire bundle clamps
Cable Tie Wraps
Cable tie wraps are used in many different ways to secure wiring.
Solderless Connectors Review
1. What is a solderless connector ?
2. Name a type of solderless connector ?
3. Which type will best hold onto a terminal stud ?
4. Which type doesn’t require crimpers ?
5. Where is a “fork” type connector used ?
6. What is a solderless wire splice connector termed ?
Review continued
7. What is an advantage of solderless connections ?
8. What is a disadvantage of solderless connections ?
9. What specialized tools are required ?
10. Name one of the wrong tools that can be used ?
11. How can you check the quality of the connections ?
Review continued12. Why are some connectors red, or yellow,
or blue ?
13. What color size is used for 20 AWG wire ?14 AWG wire ?10 AWG wire ?
14. What is used to secure a wire to something ?
15. What is a tie wrap ?
Review Continued
16. Where is a wire bundle mount used ?
17. Should a non-insulated spade connector be used to connect trailer wiring to a truck ?
18. Should wire nuts be used for truck-to-trailerwiring?
19. Is it a proper wiring practice to install two wiresinto one spade terminal ?
Review continued
20. What type of connector requires more than one crimp ?
21. Will a pair of pliers make a proper crimp ?
22. Can the same crimper jaws be used for both insulatedand non-insulated connectors?
Review Continued
23. Name a disadvantage of wire nuts.
24. In a double crimp, non-insulated connector, should the wire or insulation be crimped first ?
25. It is a good idea to tug on crimped connections ?