Terms. Flashcards
(35 cards)
0
Q
- A branch circuit that supplies a number of outlets for lighting and appliances?
A
Branch circuit, general purpose.
1
Q
- The circuit conductors between the final OC (breaker or fuze) and the outlet or outlets it supplies?
A
Branch circuit.
2
Q
- A branch circuit supplying only one piece of equipment?
A
Individual branch circuit.
3
Q
- A branch circuit consisting of two hot conductors having a 240 volt potential between them and a grounded conductor having 120 volt difference between it and each conductor?
A
Multi-wire (residential) branch circuit.
4
Q
- A branch circuit supplying portable (can be unplugged and moved without tools) household kitchen appliances?
A
Small appliance branch circuit.
5
Q
- A device that start and stop motors?
A
Controller.
6
Q
- Equipment that carries but does not use electricity. Examples are receptacles, switches, and circuit breakers?
A
Device.
7
Q
- A non-current-carrying conductor that provides an alternative path for equpment faults?
A
Equipment grounding conductor.
8
Q
- Conductor supplying panel-boards other than service panels?
A
Feeder.
9
Q
- A curve at the top of a service entrance cable designed to prevent water from entering the open end of the cable?
A
Gooseneck.
10
Q
- A current-carrying conductor that is connected to earth and that may be a neutral?
A
Grounded conductor.
11
Q
- Current traveling on an unintended path such as an equipment grounding conductor or equipment enclosure?
A
Ground fault.
12
Q
- Visible without obstructions and within 50 feet?
A
In sight.
13
Q
- An electrical panel for which more tan 10% of the circuits are rated at or less than 30 amps and are supplied with neutrals?
A
Lighting and appliance panel.
14
Q
- The electrical demand in watts or hp of a piece of electrical equipment?
A
Load.
15
Q
- The term now used to describe lighting fixtures?
A
Luminaire.
16
Q
- Individual conductors not contained within a raceway or cable sheathing?
A
Open conductors.
17
Q
- The guts of an electrical panel - the assembly of busbars, terminal bars, etc. designed to be placed in a cabinet?
A
Panel-boards. What is commonly called an electrical panel is, by NEC terms, a panel-board mounted in a cabinet.
18
Q
- The overhead conductors supplied by the utility?
A
Service drop.
19
Q
- The conductors on the customer’s premises that convey power to the service equipment?
A
Service entrance conductors.
20
Q
- The equipment at which the power conductors entering the building can be switched off to disconnect the premise’s wiring from the utility power source?
A
Service equipment.
21
Q
- Underground service entrance conductosr?
A
Service lateral.
22
Q
- The point where the service drop and service entrance meet-it is the handoff between the utility and the customer?
A
Service point.
23
Q
- A typical wall switch, including 3-way and 4-way switches?
A
Snap switch.
24
28. A concrete encased grounding electrode, named after the developer of the system, Herbert Ufer.
Ufer.
25
29. A switch that is an integral part of an appliance?
Unit switch.
26
1. Available power from a transformer , measured in VA?
Apparent power.
27
30. What is individual counter space?
Undivided by sink or cook top.
28
31. How can heat be expressed mathematically?
As watts = IxIxR.
29
32. What temperature does paper burn?
At about 451*F.
30
33. Temperature rating of conductor insulation and typical breakers and equipment terminations?
1. Conductor insulation: 60*C, 75*C, 90*C.
| 2. Breakers and equipment terminations: 60*C, 75*C.
31
34. Complete systems of conduit or tubing through which conductors are installed?
Raceways.
32
35. What is breaker lock out?
Device that keep breaker in shut off position.
33
36. Other name for 3 way switch?
A single-pole double-throw switch.
34
37. Why is hydromassage tub not a spa?
Because it is emptied after each use.
