Electrical Unit

3. non-metallic sheathed electrical cable
5. a derived unit of power
8. a protective cover for cables
9. an electrical network that has a closed loop giving a return path for the current
11. a measurement of the cross-sectional area of a wire
12. pliers used to bend wire
13. a container for electrical connections, usually intended to conceal them from sight and deter tampering
16. twisting two wires and putting them into a wire nut
19. an electrical overload switch
20. the SI derived unit for electric potential voltage

1. is a single, usually cylindrical, flexible strand or rod of metal.
2. the SI unit of electric current
4. an electrical component that can break an electrical circuit
6. is a type of fastener characterized by a helical ridge
7. a pair of opposing blades much like scissors or wire cutters.
10. a device used in electrical systems to protect against excessive current
14. states that the current through a conductor between two points is directly proportional to the potential difference across the two points
15. used to fasten two or more electrical conductors together
17. a device for joining electrical circuits together
18. a conductor that provides a low impedance path to earth