EPA Section 608 (Core, Type I, II, III, Universal) practice test
180 free practice questions for this exam, each with the reason for the answer and where to look it up.
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EPA 608 certification: practice test
10 questions, graded as you go, with the reason for every answer. No sign-up.
EPA Section 608 (Core, Type I, II, III, Universal)
Who runs it
EPA-approved certifiers
Where
United States
Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.
Sample questions
Why do HCFCs do less damage to the ozone layer than CFCs?
The hydrogen in the molecule lets it break down lower in the atmosphere
The fluorine in the molecule cancels out the effect of the chlorine atoms
HCFC molecules are too heavy to rise above the troposphere
HCFC molecules contain bromine in place of the chlorine
Show the answer
A. The hydrogen in the molecule lets it break down lower in the atmosphere
Hydrogen makes an HCFC molecule less stable, so most of it breaks down before reaching the stratosphere and less chlorine arrives there. Fluorine does not neutralize chlorine, and molecular weight does not keep refrigerants out of the stratosphere.
Reference: EPA Section 608 Core
A technician who holds only Type I certification is asked to recover the refrigerant from a 3-ton residential split system. The technician
may do the work, because the charge is under 15 lb
may do the work if a self-contained machine is used
may not do the work, because it requires Type II certification
may not do the work, because it requires Type III certification
Show the answer
C. may not do the work, because it requires Type II certification
A split system is not a small appliance, so Type I does not cover it; R-22 and R-410A split systems are high-pressure appliances under Type II. The size of the charge alone does not make something a small appliance.
Reference: 40 CFR 82.161
Type II certification covers which equipment?
Low-pressure centrifugal chillers and the purge units that are fitted to them
Factory-sealed appliances that hold five pounds of refrigerant or less
Motor vehicle air conditioners and the MVAC-like systems on farm equipment
Medium-, high- and very high-pressure appliances other than small appliances and MVACs
Show the answer
D. Medium-, high- and very high-pressure appliances other than small appliances and MVACs
Type II covers medium-, high- and very high-pressure appliances, except small appliances (Type I) and motor vehicle systems (Section 609). Low-pressure chillers fall under Type III.
Reference: 40 CFR 82.161
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