Before servicing HVAC equipment that may be energized, what is the most important first step?
Safety
Question · Easy
Never vent refrigerant
Short
Which document must be readily accessible to workers and lists a hazardous chemical's handling and first-aid information?
Unit of power equal to one joule per second, or one ampere flowing under one volt.
Basic Electricity
Guess the Term
Chapter 1: Introduction & Exam Overview
1.1 About the NATE Core Knowledge Exam
Study guide
What gas is commonly used to purge tubing of oxygen during brazing to prevent internal oxidation (scale)?
Question · Medium
Read the clue and guess the term in 6 tries.
Game
When refrigerant is released into a confined space, what is the primary exposure danger?
SI base unit of electric current, equal to one coulomb of charge passing a point each second.
Which type of fire extinguisher is rated for use on energized electrical equipment fires?
Never enter a tank before testing the air
What does a GFCI (ground-fault circuit interrupter) on an outdoor extension cord protect against?
Unit of electric potential difference that drives one ampere through one ohm of resistance.
1.2 Study Strategy & Blueprint Navigation
After a noise assessment determines hearing protection is required, which PPE protects hearing?
Swap tiles to line up three of the same term.
Term Match
When using a ladder, what is the recommended angle ratio for safe placement of an extension ladder?
Join metallic parts permanently to form a conductive path that assures electrical continuity and safe fault-current capacity.
Compressed gas cylinders such as nitrogen or acetylene should be stored and transported in what position with what feature in place?
What a Safety Data Sheet tells you
What is the main purpose of wearing a respirator when handling fibrous duct insulation or working in dusty attics?
Fast-acting protective device that compares current leaving and returning, then cuts power within as little as 1/40 second.
Jobsite hazards
1.3 HVAC Fundamentals & Math Review
Which information does a field wiring diagram provide when connecting replacement HVAC equipment?
Flip two cards at a time to find matching terms.
Term Pairs
Under EPA Section 608 rules, what should a technician do with refrigerant removed from an appliance?
Sixteen-section document that chemical manufacturers, distributors, or importers must provide for each hazardous chemical.
What hazard does using oxygen instead of nitrogen to pressure-test refrigerant tubing create?
Question · Hard
Before entering a permit-required confined space, which step is mandated by OSHA?
Gear that employers must provide when workers face falling, flying, abrasive, or splashing objects or harmful dusts, fumes, mists, vapors, or gases.
Chapter 2: Safety Regulations & Jobsite Practices
2.1 Government & Environmental Regulations
Before selecting a different speed tap on a PSC blower motor, which information should a technician use?
Find five hidden terms in a grid of letters.
Term Search
What is the correct response if you discover frayed insulation on a power cord during a job?
Procedure that disables machinery and prevents unexpected startup or stored-energy release during service and maintenance.
What does an arc-flash hazard primarily result from?
Which OSHA-required training topic covers the labeling, SDS access, and safe use of chemicals on the job?
Number that rates how well an air filter captures particles from 0.3 to 10 microns.
Achieving Desired Conditions
2.2 Personal Safety, PPE & Jobsite Practices
Which tool is used to accurately measure the inside or outside diameter of tubing to within thousandths of an inch?
Tools
Trades Exam Prep Podcast
Listen on Spotify
Podcast
Which tool produces a flared end on soft copper tubing so it can seal against a fitting?
Organization whose Standard 62.2 defines minimum ventilation requirements for homes.
After cutting copper tubing with a tube cutter, what should be done before joining the tube?
What is the correct tool to bend soft copper tubing without kinking or collapsing it?
Filter class rated to trap at least 99.97 percent of 0.3-micron aerosols.
2.3 Moving Machinery & Rotating Equipment Safety
Which hand tool is specifically designed to cut sheet metal along a curved or straight line?
Loading more…