CSLB Test 5 Questions and Answers A+ Graded
.
(2025)
1. Where .the .voltage .between .conductors .exceeds .300 .volts, .the .minimum
.clearance .of .service .drop .conductors .from .flat .roof .structures .is .at .least
a. 3'
b. 4'
c. 8'
d. 10': .8'
2. Service .conductors .must .have .a .clearance .of .not .less .than . from .win-
.dows
a. 3'
b. 4'
c. 8'
d. 10': .3'
3. An .appliance .on .a .20-amp .branch .circuit .may .not .draw .more .than
a. 5 .amps
b. 12 .amps
c. 16 .amps
d. 20 .amps: .16 .amps
4. What .is .the .minimum .clear .working .space .in .front .of .a .480 .V .panel .opposite
.exposed .live .parts?
a. 24"
b. 36"
c. 42"
d. 48": .48"
5. The .minimum .size .overhead .service .entrance .cable .permitted .is
a. No .8 .copper
b. No .6 .copper
c. No .4 .aluminum
d. No .2 .copper .clad .aluminum: .No .8 .copper
,6. A .50-kVA .transformer .supplies .480 .V .and .40 .A..What .is .its .KW .rating?
a. 19 .kW
b. 40 .kW
c. 68 .kW
d. 77 .kW: .19 .kW
7. What .is .the .minimum .clear .working .space .in .front .of .a .480V .panel .opposite
.a .grounded .wall
a. 24"
b. 36"
c. 42"
d. 48": .42"
, 8. The .cable .that .has .an .internal .bonding .strip .of .copper .or .aluminum .in
.contact .with .armor .for .its .entire .length .is
a. MI
b. AC
c. NMC
d. RMC: .AC
9. The .lead .wire .on .a .heating .cable .is .red..This .indicated
a. 120 .V
b. 208 .V
c. 240 .V
d. 277 .V: .240 .V
10. The .following .should .not .be .used .on .a .live .circuit
a. voltmeter
b. ohmmeter
c. ammeter
d. wattmeter: .Ohmmeter
11. Which .of .the .following .wires .is .solid .core
a. No .10
b. No .8
c. No .6
d. No .4: .No .10
12. The .minimum .permitted .size .for .fixture .wire .is
a. No .14
b. No .16
c. No .18
d. No .20: .No .18
13. The .instrument .that .tests .the .resistance .of .wire .insulation .is
a. ohmmeter
b. voltmeter
c. galvanometer
d. Megger: .Megger
14. The .maximum .voltage .for .a .plug .fuse .is
a. 110 .V
b. 125 .V
c. 150 .V
d. 240 .V: .125 .V
15. The .deice .used .to .measure .large .values .of .alternating .current .is .a
a. voltage .transformer
b. wattmeter
.
(2025)
1. Where .the .voltage .between .conductors .exceeds .300 .volts, .the .minimum
.clearance .of .service .drop .conductors .from .flat .roof .structures .is .at .least
a. 3'
b. 4'
c. 8'
d. 10': .8'
2. Service .conductors .must .have .a .clearance .of .not .less .than . from .win-
.dows
a. 3'
b. 4'
c. 8'
d. 10': .3'
3. An .appliance .on .a .20-amp .branch .circuit .may .not .draw .more .than
a. 5 .amps
b. 12 .amps
c. 16 .amps
d. 20 .amps: .16 .amps
4. What .is .the .minimum .clear .working .space .in .front .of .a .480 .V .panel .opposite
.exposed .live .parts?
a. 24"
b. 36"
c. 42"
d. 48": .48"
5. The .minimum .size .overhead .service .entrance .cable .permitted .is
a. No .8 .copper
b. No .6 .copper
c. No .4 .aluminum
d. No .2 .copper .clad .aluminum: .No .8 .copper
,6. A .50-kVA .transformer .supplies .480 .V .and .40 .A..What .is .its .KW .rating?
a. 19 .kW
b. 40 .kW
c. 68 .kW
d. 77 .kW: .19 .kW
7. What .is .the .minimum .clear .working .space .in .front .of .a .480V .panel .opposite
.a .grounded .wall
a. 24"
b. 36"
c. 42"
d. 48": .42"
, 8. The .cable .that .has .an .internal .bonding .strip .of .copper .or .aluminum .in
.contact .with .armor .for .its .entire .length .is
a. MI
b. AC
c. NMC
d. RMC: .AC
9. The .lead .wire .on .a .heating .cable .is .red..This .indicated
a. 120 .V
b. 208 .V
c. 240 .V
d. 277 .V: .240 .V
10. The .following .should .not .be .used .on .a .live .circuit
a. voltmeter
b. ohmmeter
c. ammeter
d. wattmeter: .Ohmmeter
11. Which .of .the .following .wires .is .solid .core
a. No .10
b. No .8
c. No .6
d. No .4: .No .10
12. The .minimum .permitted .size .for .fixture .wire .is
a. No .14
b. No .16
c. No .18
d. No .20: .No .18
13. The .instrument .that .tests .the .resistance .of .wire .insulation .is
a. ohmmeter
b. voltmeter
c. galvanometer
d. Megger: .Megger
14. The .maximum .voltage .for .a .plug .fuse .is
a. 110 .V
b. 125 .V
c. 150 .V
d. 240 .V: .125 .V
15. The .deice .used .to .measure .large .values .of .alternating .current .is .a
a. voltage .transformer
b. wattmeter
