Electricity Chapter 1-3

What electrical voltages will a HVACR technician be exposed to?

• 120 VAC

• 480 VAC

• 240 VAC

• 24VAC

• Answers A, C and D

A current flow of .015 amps or less could be fatal?

• True

• False

The best choice of ladder for a technician working with electricity is ?

• Wood

• Aluminum

• Fiberglass

• Both A and B

The correct fuse or breaker size for a 16 amp load would be ?

• 30 amps

• 15 amps

• 20 amps

• 25 amps

Ground wires are colored?

• Green

• Black

• Bare copper

• Both A and C

A GFCI is intended to protect?

• The wiring

• The equipment

• Personnel

• Both A and B

A GFCI will trip on ?

• Over current

• Leakage current of .001 amps

• Leakage current of .005 amps

• Voltage drop of ,005 volts

You should use lock out tag out when?

• The disconnect is not at the unit.

• The disconnect is greater than 15 amps.

• The disconnect is under your control.

• There is lots of activity around the job site.

• Both A and D

EMF is measured in?

• Amps

• Ohms

• Volts

• Watts

Current flow is measured in ?

• Ohms

• Volts

• Watts

• Amps