Florida Journeyman Practice Exam

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• A thermostat is a device that detects what condition?
• What happens if the testing gas is not properly removed from a refrigerant system?
• In a medium temperature application, how can heat transfer resistance in the evaporator be reduced?
• Which of the following factors is NOT a consideration in ventilation systems?
• What type of device uses a RCD to prevent electrical shock?
• Which of the following is not an indication of a partial restriction on the high side of the refrigeration system?
• Which Florida agency oversees licensing for electrical contractors?
• Gas equipment is installed on a roof 4 feet from the edge of the roof, how high must the railing be?
• According to regulations, the return air from a dwelling unit shall not be discharged through the cooling system to what?
• What is the function of a fuse in an electrical system?
• Combustion air supply is required for which type of equipment?
• Which valve is used to control the gas supply to the burners during operation of an appliance?
• Which of the following is not acceptable material for the base of a boiler?
• What impact does reducing the airflow across the evaporator have on the system?
• Drainage and overflow from cooling towers and evaporated condensers may discharge into which of these areas?
• What is the minimum area for vertical ducts delivering outside combustion air to a 45,000 BTU/h rated water heater?
• A refrigerant system that has been improperly pressure-tested could lead to what type of operational issue?
• Which type of duct is typically used for exhaust purposes in commercial kitchens?
• What should be considered when installing outdoor wiring?
• What effect does a thermostatic expansion valve with a discharge power element have on the evaporator?
• Why must liquid and suction line piping be sized large enough?
• Where should the main burner of a gas-fired boiler have an approved manual shut-off valve installed?
• Residential gas furnaces may be vented with single wall vent piping under all conditions except?
• What is the purpose of the bleed port in a thermostatic expansion valve?
• What type of wire is typically used for residential wiring?
• Which substance should not be used for safety reasons within a refrigerant system for testing?
• An established and recognized agency regularly engaged in conducting tests of furnishing inspection services when such agency has been approved by the building official is called?
• What type of device protects sensitive electronics from power surges?
• What is an acceptable method for scavenging the combustion chamber and breaching of a boiler?
• Condensate drain piping shall not be installed with a slope of less than?
• What is the standard height for light switches in residential buildings?
• What is the primary material used for electrical panel grounding?
• What does the term "overcurrent" mean?
• What is the minimum width of a discharge opening for a grease duct serving a type one hood?
• When an appliance with a combustible chamber is located in the same room as a ventilation system return air opening, how close should the return air be to the open combustion?
• What is the maximum height for outdoor lighting installations?
• What instrument is used to measure airflow velocity?
• If an appliance is installed to its listed clearance, what will the installation be considered?
• What is the function of a grounding electrode system?
• What is the minimum spacing between rung cleats or steps of a fixed ladder at a construction site?
• What defines a "dedicated circuit"?
• What should be monitored to ensure safe operation of gas-fired boilers?
• Which of the following is not a type of electrical wiring?
• For safety reasons, which gas should not be used for testing refrigerant systems?
• Absorption systems use which type of refrigerant for better efficiency in certain conditions?
• Which of the following is not a main type of automatic refrigerant flow control?
• Which issues might originate from a compressor operating at reduced volumetric efficiency?
• How does a contactor operate?
• What type of pressure does an evaporator usually operate under?
• What is the primary purpose of grounding in electrical systems?
• In refrigerant systems, excessive nitrogen can lead to which condition?
• A duct serving a type one grease hood that penetrates a ceiling, wall, or floor should be enclosed in a duct enclosure from which point?
• What color identifies a grounded conductor in electrical wiring?
• What type of screen is required for air inlets from outside the building serving residential occupancies?
• Which gas is commonly used for pressure testing refrigerant systems due to its safety?
• What is the minimum thickness required for Type I commercial hoods made of stainless steel?
• What is a typical sign of a starved evaporator?
• A vertical duct delivers outside combustion air to a water heater. What is the minimum area of each duct if the water heater is rated at 45,000 btuh?
• What is the maximum height of a surface that an employee can work or walk above an adjoining?
• What is the minimum unobstructed access width that must be provided on all sides of a boiler?
• Which of the following is not a requirement for an air dispersion system?
• Which code specifies the standards for ventilation supply air?
• What is a common effect of high pressure in the high side of a refrigeration system?
• What size breaker is required for a 12-gauge copper wire?
• In a medium temperature application, the major resistance to heat transfer in the evaporator is the film of refrigerant oil. How may this be reduced?
• What is the primary purpose of a ventilation system in a commercial kitchen?
• In a machinery room containing mechanical refrigerating equipment, what is the minimum distance required between the machinery room exhaust discharge and the exterior door or window?
• What is the safe distance for installing outdoor electrical wiring above the ground?
• What type of ventilating equipment can be transported easily without dismantling and is not connected to a duct?
• Which component is typically used to interrupt power in an electrical service?
• What is an electrical discharge?
• Absorption refrigerating systems must not be located less than 20 feet from a door window or ventilating air inlet to any building unless what condition is met?
• The components of a refrigeration system under evaporator pressure are referred to as what?
• What does GFCI stand for in electrical systems?
• Boilers shall be tested for carbon monoxide to what maximum level?
• What is the primary function of a receiver in a refrigerant system?
• Which factor is not considered in ventilation systems?
• What is the required depth for underground electrical service conductors?
• What is the primary function of circuit breakers in electrical systems?
• What is the main benefit of a low water cutoff switch for a boiler?
• All of the following are indications of partial restriction on high side except?
• Which procedure is crucial before performing maintenance on a refrigeration system?
• What is the purpose of a transformer?
• How often must residential smoke alarms be tested?
• What is the main advantage of using LED lighting?
• Why is it important to maintain proper distances from exhaust discharges in machinery rooms?
• What would disallow duct from penetrating a third floor without a fire damper?
• What should be used to cover air inlets from outside the building serving residential occupancies?
• To check electrical circuits, how is a voltmeter usually connected?
• How high should the pan of batten seam roofs be turned?
• What is the primary function of a thermostatic expansion valve in a refrigerant system?
• What is typically used to limit the amount of current flowing in a circuit?
• In what conditions can electricians work on energized circuits?
• What does adjusting the superheat primarily affect in a refrigeration system?
• What condition does a low water cutoff aim to prevent in a boiler?
• What could be caused by high head pressure in a refrigerant system?
• What does NEC stand for in the context of electrical standards?
• What is the minimum thickness needed for a 14-inch round sheet metal duct used in a residence?
• In a ducted system with a cooling coil installed and an existing furnace heat exchanger, where must the air first flow through according to code?
• What is the difference between series and parallel circuits?
• Insulation applied to an exterior surface of ducts in buildings other than dwelling or apartments shall have a flame spread rating of not more than?
• In refrigerant systems, which system component governs the rate of refrigerant flow?
• A boiler furnishing steam air pressures in excess of 15 psi is classified as what?
• When are junction boxes required in residential wiring?
• When removing any group 1 refrigerant except CO2 from a refrigeration system, how should it be discharged?
• What is the minimum level of insulation required for a portion of supply duct greater than 3 inches in diameter on the exterior of a residential structure?
• What is the rated lifespan for most incandescent light bulbs?
• Which of the following shall not be used for safety reasons within a refrigerant system for testing?
• How many ohms is considered a low-resistance connection?
• What does the term "ampacity" refer to?
• What is the primary function of a transformer?
• Which of the following is not a main type of automatic refrigeration flow control?
• What code must all new electrical installations comply with?
• What is the minimum ampacity requirement for home branch circuits?
• Where shall the main burner of a gas fired boiler have an approved manual shut off valve installed?
• If a user finds that their refrigerant system is oversaturated, what is a likely contributing factor?
• Why is it important to label circuit breakers in an electrical panel?
• What electrical code section deals specifically with residential wiring?
• What does a wattmeter measure?
• Condensate drain piping shall not be installed with a slope of less than?
• What is the minimum clearance to combustible materials for a duct system operating between 125 degrees and 250 degrees?
• What type of space is indirectly cooled and enclosed within the building's thermal envelope?
• What size wire is typically used for a 30-amp circuit?
• What is the outside sheet metal size of an insulated duct with an airside dimension of 18"x10" and 1" insulation?
• What is an ampere?
• How often must a residential electrical panel be inspected?
• What type of equipment cools by evaporation of water into an Airstream?
• Which of the following is a primary function of an air handling unit in ventilation systems?
• What is the minimum thickness required for a 14" round sheet metal duct used in a residence?
• If a compressor has a displacement of 10 cubic inches but actually pumps 6 cubic inches, what is its volumetric efficiency?
• What is a common indication of electrical overload?
• An emergency refrigeration control switch is required to shut off all electrically operated machinery in what type of room?
• What is the minimum clearance required for overhead service wires over residential properties?
• Where must smoke alarms be installed in a home?
• What is required for every electrical service according to Florida code?
• An outside air inlet for a non-residential portion of a building can have a screen with openings but must be smaller than what size?
• What is the normal procedure for checking electrical circuits?
• Which of these tapes is acceptable as a closure system for fibrous glass ductboard?
• What is the function of a relay in an electrical circuit?
• What is required for every automatic hot water heating boiler not under continuous attendance?
• What is the minimum clearance from a grease duct system to combustible material?
• What must every fuel-burning heating appliance bear on a permanent and legible factory-applied nameplate?
• What is the purpose of a ground fault circuit interrupter (GFCI)?
• What is the residential service voltage in most Florida homes?
• Which material is most commonly used for electrical conduit?
• Which type of lighting should be used in damp environments?
• Which statement about hearing protection for employees is true?
• Which of these tapes is acceptable as a closure system for fibrous glass duct board?
• What kind of ground is typically used for electrical devices in wet locations?
• What is the minimum clearance required to combustibles for duct systems operating between 125°F and 250°F?
• What is the minimum number of hours required for Journeyman Electrical Apprenticeship in Florida?
• Which device is most commonly used for protecting against electrical shocks in wet environments?
• What is the maximum allowable voltage drop for branch circuits?
• What happens to the evaporator if a thermostatic expansion valve is oversized for a system?
• What is the purpose of a surge protective device?
• Which factors influence the selection of wire sizes in electrical installations?
• Which of the following is prohibited for mechanical refrigerating systems and portions thereof?
• According to NEC, how many receptacles are permitted per 20-amp circuit?
• What is the purpose of using an anemometer in refrigeration systems?
• What is the purpose of bonding in electrical systems?
• In an attic installation, where must a platform be provided?
• What type of labeling is required on refrigerant pressure relief devices?
• How many circuits can be placed on a 20-amp breaker in a residential setting?
• What is the purpose of a disconnect switch?
• What is the maximum outlet temperature limit for warm air in a plenum supplied by a furnace?
• The minimum spacing between rungs, cleats, or steps of a fixed ladder on a construction site shall be?
• What is the main purpose of a circuit breaker?
• What must all closed type hot water heating systems, not under continuous attendance, be provided with?
• An emergency refrigeration controls switch shall be provided to shut off all electrically operated machinery in any machinery room containing a mechanical refrigeration system. What may the switch not shut off?
• Copper tubing used for refrigerant piping of mechanical refrigeration systems shall be commercially designated as?
• What is the function of a capacitor in an electrical circuit?
• What type of equipment operates by cooling through the evaporation of water into the air system?
• When installing receptacles, what is the required height from the floor?
• What is a sign of a faulty transformer in an electrical circuit?
• What does a voltmeter measure?
• What does the term "conductor" mean in electrical terms?
• What is the first procedure to perform when starting up a new unit?
• What is the maximum distance between outlets in a residential kitchen according to the NEC?
• What electrical hazard is caused by aging wiring or insulation?
• Which of the following is not a requirement for air dispersion system?
• Which of the following is not a requirement for a fire damper?
• What is an established and recognized agency called that is engaged in conducting tests or furnishing inspection services?
• What is the most serious consequence of not removing all the nitrogen used for pressure testing on an HCFC system?
• What is the primary role of a surge protector?
• What is the flame spread rating limit for insulation applied to ducts in buildings other than dwellings or apartments?
• What can appliance vent connectors and joints be securely joined with?
• Where must a platform be provided for equipment in an attic installation?
• What type of exhaust is approved for connection to a 6" flue stack venting a gas-fired furnace?
• Which of the following is not acceptable material for the base of a boiler?
• For what purpose is a main disconnect switch installed in an electrical service?
• What should be the maximum number of lighting fixtures connected to a 20-amp circuit?
• An outside air inlet serving a nonresidential portion of a building may be covered with a screen. The size of the opening in this screen mesh must be no smaller than what size?