Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
48 Cards in this Set
- Front
- Back
Which condition at the main panel should NOT be reported as a safety hazard? |
Live current in the main panel |
|
Which conditions SHOULD be reported as a safety hazard? |
Undersized branch circuit wiring System not grounded Inoperable gfci |
|
What is NOT an overcurrent protection device? |
Meter |
|
A type of box that holds splices, outlets and switches is called: |
Junction box |
|
Electricity moves along wires known as |
Conductors |
|
T/F: tapping before the main disconnect is considered an insafe practice? |
True |
|
The electrical pressure that pushes through wires is known as |
Voltage |
|
Upgrading to ___fuses stores over fusing |
S |
|
Electric dryer receptacles in older houses require |
Their own circuit |
|
T/F; all in panel electrical splices should be reported as improper |
False |
|
What method of sub-panep wiring is NOT acceptable? |
Feeder wires tapped at the main disconnect in main panel |
|
T/F: horizontal faced up countertop receptacles are permitted. |
False |
|
Whay should be reported as a problem with an electrical panel I'm regards to breakers? |
Unlinked double pole breakers |
|
Above ground cables connecting a utility pole to service entrance conductors are: |
Service drop |
|
A panel using double pole breaker to isolate 120V circuits is called: |
Split bus panel |
|
Aluminum wire size for 20 Amp is: |
10 awg |
|
Three conductors at the weatherhead. What is the nominal electric service? |
Split phase 120/240 volts |
|
How many conductors is three pgase 240 volts? |
4 |
|
The larger the diameter of the conductor: |
The more current it carries |
|
Most common color coding for 240v conductors is: |
Black/red for hot and white for neutral/ground |
|
What is true about 240v breakers? |
They should be tied together |
|
Which kind of scree is the hot wire connected? |
Brass |
|
T/F: several grounded conductors can terminate on the same lug |
False |
|
What is minimum service for town home? |
100 Amps |
|
Problematic solid aluminum wiring was replaced for copper in what years? |
1965-1978 |
|
Reversed polarity means |
Hot and grounded are reversed |
|
Is it code to connect aluminum wire to an outlet? |
Maybe - if the outlet is rated for that wire |
|
In Subpanel you are required to: |
Isolate neutral bus and conductors from contacting the panel enclosure |
|
Gfci functions by sensing |
A current imbalance between hot (ungrounded) and neutral (grounded) |
|
Unused breaker openings are |
Dangerous and pose electrical hazard |
|
Resistance is |
Ohms |
|
What is an unused knockout? |
A fuse holder without fuse in it. When removed it exposes electrical shock |
|
When testing gfci reset device in hall bathroom, you find that power shuts off to outlets in other bathrooms as well. You conclude that: |
All these outlets are properly wired on same gfco. No correction needed. |
|
Panel clear space measuring |
30"W x 80"H x 36"D |
|
Gfci is now required for |
Garages |
|
Zinsco is sometimes branded as |
Sylvania |
|
3 hole grounding type electrical receptacles must be |
Grounded |
|
What does service drop loop prevent? |
Water entering meter base and panel |
|
Modern branch circuit wiring is used primarily for: |
Electric ovens |
|
Besides aluminum, the most common residential wiring material is |
Copper |
|
Minimum service drop above roadway |
18 ft |
|
T/F: water dropping from panel must be investigated |
False |
|
According to NEC, gfcis need NOT be installed in |
By overhead garage door opener |
|
In New construction what would NOT be considered an electrical system defect? |
#12 copper wire to 15amp breaker |
|
If a light fixtures fails to work, what should you do? |
Determine whether bulb is dead |
|
Problematic solid aluminum was used in what years? |
1965-1978 used |
|
Common cause of arc flashes when removing panel front is from |
Incorrect fasteners |
|
Most recommended method of repairing aluminum branch circuit wiring in 1980 was |
COPALUM crimp connectors to bond copper to aluminum wiring at each connection/splice |