CSLB C10 Test 1
1. What is the minimum working clearance from an electrical panel under 600 V?
ANSWER 36"
2. Voltage drop in wire is a function of
ANSWER Wire gauge, Length of wire, Current flow in the wire
3. A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The
average daily on-time is 12 hours per day. How many watt-hours are consumed by the
light on an average day?
ANSWER 156
4. Where may you use nonmetallic-sheathed cable?
ANSWER inside floors and walls
5. What is the maximum permitted distance between convenience outlets in kitchens?
ANSWER 12'
6. The minimum permitted size fixture wire is
ANSWER No. 18
7. What is an Erickson coupling used for?
ANSWER to connect two sections of rigid conduit when one section cannot be turned
1/
,8. The smallest size grounding conductor permitted for service entrance is
ANSWER -
No. 8 copper
9. For an electric appliance with a 17.5 A load, the overcurrent device must not exceed
ANSWER 25 amps
10. A 5 kW appliance is used for 5 hours. At $0.014 per kWh, the cost of running the
appliance is
ANSWER $0.35
11. If the plumber accidentally cuts installed wires, to whom should you report the
problem?
ANSWER general contractor
12. What is the maximum distance to an outlet from any point along the wall behind a
kitchen counter?
ANSWER 24"
13. Which of the following materials is not corrosive?
ANSWER enamel
14. 65 street lights are fed by a 2275-volt series circuit. What is the voltage across
each light?
2/
, ANSWER 35 V
15. What do you not take into consideration when doing load demand calcu- lations?
ANSWER small portable heating and cooling appliances
16. The symbol represents a
ANSWER relay coil
17. A fixture that weighs more than must be supported independently of
an outlet box.
ANSWER 50 lb.
18. After installing a new A/C how would you test it?
ANSWER turn on the breaker and check voltage
3/
1. What is the minimum working clearance from an electrical panel under 600 V?
ANSWER 36"
2. Voltage drop in wire is a function of
ANSWER Wire gauge, Length of wire, Current flow in the wire
3. A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The
average daily on-time is 12 hours per day. How many watt-hours are consumed by the
light on an average day?
ANSWER 156
4. Where may you use nonmetallic-sheathed cable?
ANSWER inside floors and walls
5. What is the maximum permitted distance between convenience outlets in kitchens?
ANSWER 12'
6. The minimum permitted size fixture wire is
ANSWER No. 18
7. What is an Erickson coupling used for?
ANSWER to connect two sections of rigid conduit when one section cannot be turned
1/
,8. The smallest size grounding conductor permitted for service entrance is
ANSWER -
No. 8 copper
9. For an electric appliance with a 17.5 A load, the overcurrent device must not exceed
ANSWER 25 amps
10. A 5 kW appliance is used for 5 hours. At $0.014 per kWh, the cost of running the
appliance is
ANSWER $0.35
11. If the plumber accidentally cuts installed wires, to whom should you report the
problem?
ANSWER general contractor
12. What is the maximum distance to an outlet from any point along the wall behind a
kitchen counter?
ANSWER 24"
13. Which of the following materials is not corrosive?
ANSWER enamel
14. 65 street lights are fed by a 2275-volt series circuit. What is the voltage across
each light?
2/
, ANSWER 35 V
15. What do you not take into consideration when doing load demand calcu- lations?
ANSWER small portable heating and cooling appliances
16. The symbol represents a
ANSWER relay coil
17. A fixture that weighs more than must be supported independently of
an outlet box.
ANSWER 50 lb.
18. After installing a new A/C how would you test it?
ANSWER turn on the breaker and check voltage
3/
