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C-21A Refrigeration Contractor (2018-03-29)

The construction, erection and installation of devices, machinery and units for the control of air temperatures below 50oF in refrigerators, refrigerated rooms and insulated spaces, and installation of any related insulation, ducts, blowers, registers, controls over humidity and thermostatic controls, lines for supplying natural gas from the unit to the point of connection in the existing line for natural gas at the meter or at any point thereafter, electrical service from the unit’s device to protect against excessive current to the main electrical panel, but not the installation of other gas or electric services for the devices, machinery or units.

50 Questions
70% Minimum Passing Score
2 Hours

These products apply to test outline dated 2018-03-29

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Open Book These books are allowed while taking your test.
Closed Book These books are for pre-test study only and are not available for use during the test.

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  • Closed Book

    Code of Federal Regulations, 29 CFR Part 1926 (OSHA) 2019

    Publication Year: 2019

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    All Federal Construction Regulations (29 CFR 1926) are included in this “perfect bound” book in an easy-to-read, two-color layout.

    All 29 CFR 1926 regulations for construction industry are included along with the following items:

    29 CFR 1903 regulations covering inspections, citations, and penalties
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    OSHA keyword dictionary
    Easy to find OSHA interpretations

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    Uniform Mechanical Code 2012

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    Uniform Mechanical Code 2012 provides complete requirements for the installation and maintenance of heating, ventilating, cooling and refrigeration systems, while at the same time allowing latitude for innovations and new technologies.