Splicing and Terminating Low Voltage Instructor: Dave Flashcards
Q: 4 most common classes of cable joints or terminations are.
A: Soldered, Fused, Mechanical and compression.
Q: What is Exothermic Welding.
A: Process of fusing / melting 2 materials together.
Q: What are 2 ways of removing the insulation.
A: Wire strippers and Whittling/Penciling.
Q: What are 3 basic wire or cable connections.
A: Splices, taps and terminations.
Q: What is the maximum wire size that can be terminated under a screw.
A: 10 AWG
Q: How many wires can be terminated under a screw with a shoulder.
A: 2
Q: What direction must the wire be wrapped around the screw.
A: Clockwise.
Q: What is Cold Flow.
A: The Gradual flow of material away from a high-pressure area.
Q: What markings must be on all approved aluminum terminals, lugs, connectors and receptacles.
A: CU/AL or CO/ALR
Q: What is an exothermic reaction.
A: Gives of Heat
Q: What insulation properties must you consider when re-insulating a conductor.
A: Temperature and Voltage.
Q: Two concerns when terminating aluminum conductors.
A: Cold Flow & Thermal Expansion.
Q: Flux is a cleaner. True or False
A: False
Q: What is a Heat Sink.
A: Is any metal device which is attached to a wire, that heat will transfer to prevent damage.
