Residential Practice Exam

Typical residential thermostat operates on what type of voltage?

• AC

• 24 VAC

• DC

• 24 VDC

How many 32w CFL can be on a 120v, 20A circuit

(a)  

According to OSHA, GFCI's on construction sites should be tested every:

• 3 Days

• Week

• Month

• 3 Months

What is the corrected ampacity of a 6/2 with ground cable installed in an attic at a temp of 120*F

(a)  

Which tool is used to analyze electrical circuits?

• Ammeter

• Watt Meter

• Capacitor Tester

• Megger

What length cord is allowed on a garbage disposal?

(a)  

Can the cable be sized to meet code if a 30kW, 240V single phase heater is connected to a panel using 4AWG NMC?

• No

• Only if it has a very short run

• Yes

• Only if it is parallel with another 4AWG conductor

When using a voltmeter to test a circuit, the technician sets the volt meter on the:

• Highest range and works down

• Highest range and leaves it there

• Lowest range and works up

• Middle range and goes up and down as necessary

What is considered when replacing an electrical device in an air conditioning circuit?

• Voltage

• Horsepower

• BTU

• Service Factor

What type of disconnect do you use for an overhead door?

• Knife Blade

• Cord and Plug

• Single Pole Switch

• Double Throw Switch