Josh's IEC exam year #1 semester #1
An electrician has a gross pay of $396.00 and worked 44 hours. What is the hourly rate of pay for the electrician?
$9.00
10.3 μA equals:
.000001030 A
106 A equals:
.106 kA
a 6-32 x 2 1/2 machine screw has a diameter of ___________ inches
.138
12mA equals:
0.012A
Moving carts or hand trucks over bumpy, rough terrain or up and down stairs may expose workers to abrupt, jarring impacts which can cause shoulder and back pain.
TRUE
While working in a hazardous area where the worker is exposed to serve impact hazards face shields are required to be worn along with safety goggles or glasses.
TRUE
Work can be preformed using power tools in wet locations if _________________________________________________.
the tool uses a low-voltage insolation transformer.
for fasteners that are designed to be countersunk, the length is determined by the distance from the end of the fastener to the _____________________________
the top of the head
1.2mV equals:
1,200,00 V
the resistance of an incandescent lamp is _____ ohms where the manufacturer supplies the following information: 100 watts @ 130 vaults
169
Look at 21, 31 for picture and question
:)
The current drawn by an incandescent lamp is __________ amps where the manufacturer supplies the following information and it is operated at 110 volts:
.6509
A ladder that can be readily moved or carried describes a _________. 1. step ladder 2. extension ladder
1 & 2
A hallway in a dwelling is 17 feet long. At least _____________ receptacle(s) are required to be installed.
1 total (one on either wall)
Which of the following are wire connectors? 1. Split-bolt 2. Compression Connector 3. Mechanical Lug
1, 2, & 3
1.3kV equals:
1,300 V
what is the percentage of voltage drop on a 480-volt circuit? 6 AWG copper conductors were used and the load draws 39 amperes. The distance from the panel to the load is 176 feet. Use K = 11.2 to calculate the voltage dropped in the conductors.
1.2%
A size _______ AWG equipment grounding conductor is contained in a nonmetallic-sheathed cable marked as 10 AWG.
10
In a dwelling a receptacle shall be installed in a hallway that measures ________ feet or more measured along the centerline of a hallway.
10
flat cable assemblies shall have conductors of _________ AWG special stranded copper wires.
10
All connected loads in the house should be balanced within ______%, according to the EWR specifications .
10%
The circuit breaker feeding EWR Panel B has a rating of ______ Amps
100
The circular mil area of a 10 AWG bare copper conductor is _________ cmils
10380
What size equipment grounding conductor is contained in 12-3 type MC cable?
12
The NEC permits 20% of the cross-sectional area in a wireway to be occupied by conductors. For an 8" x 8" x 6' long wire way the conductors can occupy ____________ in².
12.8
For a 120/208-volt, 3ø, 4-wire supply system the voltage from Cø to neutral is __________.
120
what is the current drawn by a hair dryer if the name plate supplies the following information and it is operated at 110 volts: 1750 watts 120 volts
13.367
According to 240.4 (D)(3), the smallest conductor that can be connected to a 15-A circuit breaker is a ___________ AWG.
14
If you are standing on the highest permitted step on a 12 foot step ladder, the top of your head will be about ____________ feet above the floor. You are 6 feet tall.
16
A circuit consists of 364 feet of 6 AWG copper conductors. This wire has a resistance of .491 ohms per 1000 feet. What is the resistance, in mΩ, of the circuit conductors?
178.7
A water heater has two elements that will operate simultaneously. One heating element is rated 3,500 watts @ 250 volts and the second element is rated to deliver 2,500 watts when operated 250 volts. The water heater will draw _______ amps of current when operated from a 208-volt circuit.
19.968
Which of the following would best protect your eyes from the dust or other airborne particles? 1. Safety glasses 2. Safety goggles 3. Full face shields
2. Safety googles ONLY
1 inch equals ___ centimeters
2.54 cm
For a 200-A RESIDENTIAL service, the smallest service conductors permitted according to 310.15 (B)(7) in the NEC are __________ AWG THHN/THWN.
2/0
According to the NEC Index, branch circuits are covered under in Articles _________.
210 & 220
Table _____ of the NEC gives the minimum wire sizes, based on circuit rating, that can be used for branch circuits with two or more outlets or receptacles.
210.24
Where conductors of higher ampacity are used for any reason, the ampere rating or setting of the specified overcurrent device shall determine the circuit rating. The Code references for this statement is Section _______
210.3
A type 2 ladder is rated to withstand a load of ___________ pounds.
225 pounds
On Monday there were 1021 electricians working. Tuesday was bad weather and only 794 electricians were working. How many electricians did not work on Tuesday because of bad weather?
227
23.5 V equals:
23,500 mV
For a 120/240-volt, 3ø, 4-wire supply system the voltage from Aø to Bø is ______.
240
a 1/4 - 28 x 3 !/2 machine screw has ________________ threads per inch.
28
The maximum distance permitted between a box and the first strap (support) for an installation using 1" EMT is _________ feet.
3
If you are working with an extension ladder that has 15 rungs in each of the two sliding sections, this is a _____________-foot extension ladder.
30
the temperature where 10 AWG THN/THWN copper conductors are installed in RMC in 165 degrees fahrenheit. The wire can carry a load that draws a maximum of ______________.
30 amps
___________ is the Code reference for support requirements for Type AC cable.
320.30
You need to get lamps installed for 544 luminaries that are located in an 11-foot high ceiling. You remember that it usually takes 45 minutes for an appropriate to install lamps in 12 of these luminaries. It should take one apprentice ______________ to "lamp" the 544 luminaries.
34 hours 0 minutes
The support requirements for PVC are located in the NEC in Section __________.
352.30
In a house _________ receptacles should be installed along a 15-foot long kitchen countertop per the minimum requirements in the NEC.
4
What minimum size metal box is needed to hold one 15-Amp switch, one 20-Amp receptacle, two #12 conductors with #12 ground, two #14 conductors with a #14 ground, and a 30-Amp circuit with two #10 conductors and a #10 ground? This box will have a flat 2-gang plaster ring so that no volume is added with the installation of the P-ring.
4 11/16 x 1 1/4 square
What is the resistance of a blender if the nameplate supplies the following information: 350 watts 120 volts
41.1429
Where two #18, three #16, two #14, three #12, two #10, three #8, and two #6 conductors are contaminated in a box, _____ cubic inches will be occupied in the box by these conductors.
43.00
As a general rule, the strength of a rope is reduced about _______________ when knot is tied
50%
Branch-circuit conductors at outlet boxes are required to have at least _________ inches of free conductors for making splices and connections. The length of conductor is measured from the point in the box where it emerges from its raceway.
6
Lengths of flexible metal conduit longer than __________ feet are not acceptable as an equipment grounding conductor. In such cases a separate bonding jumper is required to be run outside of the flexible conduit maintain the continuity of the grounding path.
6
What is the maximum distance permitted between straps (supports) where 12-2 Type MC cable is run for some distance between boxes or enclosures? _______ feet
6
Wall receptacle outlets in residence must be placed so that no point along the floor line is more than how many feet from an outlet?
6 feet
You timed your helper and it took him 2 1/2 hours to dig a trench 20 feet long. If you get another helper who will work at the same pace, how much time will it take BOTH of them to dig an additional 100 feet?
6 hours and 15 minutes
Extension ladders longer than _____ feet should not be used.
60
How many number 14 AWG conductors may be installed in a 3" x 2" x 2 3/4" device box?
7
An incandescent lamp consumes _________ of power at 110 volts where the manufacturer's stamp on the lamp shows: 100 watts 130 volts.
71.6
If you are standing on the highest permitted step on a 12 foot step ladder, you ________ required to use fall protection equipment.
are NOT
The voltage dropped in circuit conductors ___________ when the circuit conductor size is increased.
decreases
In a commercial garage, such as Jimmy's Auto Repair, the NEC ____________ 125-volt convenience receptacles to be installed.
does not require any
When type NM cable is run through holes in a metal framing member, "listed" _________ must be provided to protect the cable from sharp metal edges.
either a or b (a. grommets and b. bushings)
A worker who weighs 260 pounds and is wearing a 16 lb tool belt __________ exceeded the rating of a Type 1A ladder.
has NOT
Wire sizes up through 4/0 are expressed in American Wire Gauge (AWG). Wire sizes larger than 4/0 AWG are expressed in
kcmil
Does the NEC permit a wall-switched-controlled receptacle to be used for lighting an attic space in a Starbucks coffee shop? A portable lamp or drop light, for example, could be plugged into the receptacle. The attic space contains air conditioning equipment that requires servicing.
no
Nonmetallic sheathed cable is manufactured with copper conductors ranging in size from ______ AWG
none of the options were right (look at this one number 109)
For a 277/480-volt, 3ø, 4-wire supply system the voltage from Aø to Bø is ______.
none of these (not 120, 208, 240, or 277)
When a switch is to be installed in a 4 11/16" square (2100 or 411) box, a ________ must be installed on the box.
plaster ring
Ampacity and current-carrying capacity mean the same thing
true
There are 31 students in the class. 8 students are over 6 feet tall. 17 students are 5'6" to 6'0" in height. 6 students are under 5'2". What is the ratio of the number of students under 5'2" to the number of students over 6' tall?
3:4
A 42.7 amp 240-volt load is located 167 feet from the panel. The circuit is connected to a 2-pole circuit breaker in a 120/240-volt, 1ø, 3 wire panel board. the smallest wire that can be used for the circuit is __________ AWG. Use K = 12 and limit the voltage dropped in the circuit conductors to 2.5%.
4
64 square yards =
576 square feet
32 mm equals ____ inches
1.26 inches
5,832 cubic inches =
3.375 cubic feet
64 square yards =
82,944 square inches.
What Article of the NEC may be referred to as a dictionary or glossary of terms?
Article 100
What NEC Article discusses the purpose and scope of the Code?
Article 90
Two particles that have opposites charges (one + and the other -) will _______ each other.
Attract
Which materials listed below are good insulators? 1. Aluminum 2. Gold 3. Distilled water
Distilled water only
For new residential construction, the wiring method is permitted to be Type NM cable where the building construction is ______________________.
Hollow voids of cinder block
When Type AC cable is installed in horizontal runs through the holes in the sheet metal studs and joists, do additional supports have to be installed (Caddy clips, for examples)? The AC cable is securely fastened within the required distance from any boxes or enclosures and the framing members are on 24-inch centers.
No
Section 314.3 of the NEC permits nonmetallic outlet and device boxes to be installed with which of the following?
Nonmetallic sheathed cable
Which of the following is NOT considered electrical hazard by OSHA.
Power tool injury
What word makes a code requirement mandatory?
Shall
Nationally Recognized Testing Laboratory (NRTL) _______________ electrical products to provide a basis for approval by inspectors in the field.
Test and list
Trade size 1 Schedule 40 and Schedule 80 PVC use the same fittings (coupling and connectors). Notes: PVC "connectors" are properly identified as male or female adapters.
True
Insulated conductors and cables installed in wet locations must have a _______ designation in their type marketing.
W
A 3-foot long piece of LFMC (liquidtight flexible metal conduit) will be installed to connect a motor
Yes
In the international system of units, the prefix milli- means _____________.
one thousandth
