Michigan Journeyman Practice Test

These questions are part of the practice quiz. Start practicing

• What size wire gauge requires protection by a bushing when entering a box?
• Which type of circuit would most likely use a GFCI outlet?
• What is the minimum number of hours of classroom instruction required for a Michigan Journeyman license?
• What does the term "load calculation" refer to in electrical work?
• What is the required length of a ground ring in direct contact with the earth when installing around a building?
• Which type of conductor is preferred for ease of installation in complex wiring situations?
• What is the primary code used for electrical installations in Michigan?
• Which electrical device is used to provide overload protection?
• What is the primary purpose of using Schedule 80 PVC in electrical installations?
• What is the main benefit of conduit installations?
• What is a common application for branch circuits in residential wiring?
• Work installed by an electrical contractor can be concealed after what condition is met?
• In Michigan, which type of license must an electrician have to work independently?
• What type of conduit should be used for direct burial cable emerging from the ground when it is subject to physical damage?
• What is the typical size of service entry conductors for a residential home?
• What is the main advantage of using circuit breakers over fuses?
• What is the typical voltage drop limit for branch circuits?
• How can you identify a faulty circuit breaker?
• What is the function of a relay?
• How many volts are typically present in a residential electrical outlet?
• Which of the following is a typical use for a GFCI?
• How should wiring for home entertainment systems be installed?
• What type of branch circuits shall furnaces be supplied by?
• How many campers does a 208 V, three-phase heater that draws 3598 W support?
• Auxiliary gutters shall not contain more than how many current carrying conductors without derating?
• The impassivity of a number 6 AWG copper THHN conductor terminated in a switchboard rated at 75° C is how many amps?
• What is the function of a Ground Fault Circuit Interrupter (GFCI)?
• What is the main purpose of the National Electrical Code (NEC)?
• What does proper grounding help prevent?
• What is the minimum size of rigid metal conduit for a commercial service rated at 150 A, 120/240 V single-phase using THWN wire?
• What is the minimum vertical clearance for service drop conductors above a pedestrian sidewalk?
• Conductor fill of a conduit nipple 24 inches or less in length shall not exceed what percentage?
• What standard defines the acceptable distances between electrical equipment and likely sources of water?
• What does GFCI stand for in electrical safety?
• If a comb rated at 4750 W, 208 V 3 phase draws how many amps?
• At what minimum height must the coupling means of electrical vehicle supply equipment be stored indoors?
• What is the function of a transformer?
• Which device is used to measure the current flowing through a circuit?
• A single man motor operated appliance of 134 A shall have overcurrent protection not to exceed what percentage of the appliance rating?
• What is the primary function of a circuit tester?
• Why are lighting outlets necessary in habitable rooms?
• Branch circuits larger than ______ amps shall supply only non-lighting loads.
• What factor limits the operation of a high impedance grounded system?
• What is the term for the maximum current that a conductor can safely carry?
• What is the primary purpose of a bushing in electrical installations?
• What is the term for a screw connecting the neutral bar to the service equipment enclosure?
• What is a primary function of branch circuits in electrical systems?
• When are two ground rods required for a residential service?
• Short sections of Farris metal raceway used for physical protection of the grounding electrode conductor shall be bonded at both ends to the ______.
• What is a typical use for low-voltage residential wiring?
• What type of wiring is typically used for lighting fixtures?
• What is a common reason for an electrical shock?
• Which material is commonly frowned upon for modern wiring due to safety concerns?
• What is the formula for calculating electrical power?
• What is the primary purpose of branch circuits in electrical systems?
• What measure can reduce the risk of electrical shock in wet environments?
• Which type of cable is not permitted for service entrance conductors?
• What is the minimum distance required when installing two ground rods?
• What is the purpose of a junction box?
• Which type of receptacle may be included on a small appliance branch circuit?
• What should be done if a conductor is damaged?
• What is the primary role of a Journeyman Electrician?
• What safety equipment is essential when working on electrical installations?
• What is the NEC's requirement for lighting outlets in habitable rooms?
• What does the term “de-rating” refer to in electrical wiring?
• What is the minimum height for outlet boxes above the finished floor in dwellings?
• When should circuit breakers be tested for functionality?
• Which factor should be considered when selecting electrical cables?
• What does LARA stand for in Michigan's electrical licensing context?
• What does NEC stand for?
• What is the minimum service capacity required for a one-family dwelling?
• What type of conduit should be avoided when installing service entrance conductors?
• What should be the minimum clearance for overhead service drops?
• How can the direction of rotation of a three-phase motor be reversed?
• What is the main advantage of using LED lighting?
• What kind of circuit is typically used for residential lighting?
• Why is it important to keep electrical circuits balanced?
• What is the minimum amperage requirement for a power receptacle?
• What is the purpose of a circuit breaker?
• Direct burial cables rated above what voltage must be shielded?
• What is the minimum height for service conductors above a residential driveway?
• When is it acceptable to use a non-metallic sheathed cable?
• Which of the following is an acceptable way to protect electrical wires?
• What is the minimum amp rating required for a service disconnect in a one-family dwelling unit?
• What is the minimum conductor size for a circuit with six conductors connected to a 75° C rated circuit breaker, each carrying a 70 amp load?
• What is a common safety feature added to electrical installations to protect against ground faults?
• When is it acceptable to use a direct burial cable?
• Which component is essential for protecting against overloads in a circuit?
• What is the maximum allowable voltage drop in a branch circuit?
• What is the minimum size of a service entrance cable for a 200-amp service?
• What is a GFCI protected circuit required for in bathrooms?
• What should be installed in residential garages to meet safety standards?
• What is the minimum working space required in front of an electrical panel?
• What type of meter measures electrical energy consumption?
• What is the minimum distance underwater light fixtures must be installed below the water level?
• What type of bonding is required for pools and hot tubs?
• What is the minimum height of a junction box for a 124 wet niche fixture above the ground?
• What is the standard voltage level for most residential electrical systems in the United States?
• What is the purpose of a junction box?
• What electrical issue is commonly treated with the installation of a surge protector?
• What is the maximum ampacity allowed for Edison base fuses?
• What safety measure should be taken when working on circuits?
• What is the main purpose of grounding in electrical systems?
• Can type insulated conductors be used in direct burial applications?
• In a 1-inch conduit with three number 10 TW circuits, what is the maximum capacity of each phase conductor?
• Where shall disconnecting means be provided on a supply side of all carriage fuses?
• How is wire gauge determined?
• What is the primary function of a surge protector?
• The impedance of NM cables is based on the blank degree column of table 310.15 B 16.
• Where fuses are used for motor overload protection, a fuse shall be inserted in each ungrounded conductor and also in the grounded conductor if the supply system is ______ A/C with one conductor grounded.
• What precaution should be taken when working on live circuits?
• An AC general use snap switch used to control a motor load shall not exceed what percentage of the amp being read of the switch's rated voltage?
• Receptacle outlets that are in or on the floor cannot be counted as required receptacles unless they are within how many inches of the wall?
• What does the abbreviation "SWD" mean in lighting fixtures?
• What is the maximum distance between supports for 1 inch rigid nonmetallic conduit?
• What is the purpose of a ground fault circuit interrupter (GFCI)?
• What distinguishes a fusible disconnect from a circuit breaker?
• What is the minimum depth required for underground conduit installations?
• How do you determine the size of a wire needed for a specific circuit?
• How can you ensure an electrical circuit is not energized before working on it?
• What is the volt-ampere rating of a device that consumes 14.5 A on a 240 V circuit?
• In an elevator system, which of the following is NOT typically considered when designing electrical circuits?
• What are the minimum dimensions for a concrete encased steel reinforced base electrode?
• What does NEC Article 250 cover?
• What is considered an acceptable voltage drop for feeders and branch circuits?
• What is a three-phase system?
• In a non-metallic box not larger than 2 1/4" x 4", cable clamps are not needed if the NM cable is stapled within what distance of the box?
• A GFCI protected receptacle for a pump motor may be installed on which side of the dwelling unit?
• What is the minimum voltage rating for communication cable?
• Which voltage is standard for most residential lighting in Michigan?
• What is the minimum height requirement for the coupling means of electrical vehicle supply equipment outdoors?
• What is the minimum width of working space at a service panel?
• What is the function of a circuit breaker in an electrical system?
• What is the purpose of a load calculation in electrical systems?
• What is the function of an arc fault circuit interrupter (AFCI)?
• How many inches of thermal expansion occur for 100 feet of rigid nonmetallic conduit due to temperature changes between -15°F to 105°F?
• In Michigan, what is the licensing authority for electricians?
• What type of current does a transformer typically handle?
• What is generally the ideal location for electrical outlets in homes?
• What is the color code for a standard hot wire in residential wiring?
• For non-metallic conduits, what is the safe minimum burial depth?
• What should be the minimum rating of a receptacle for use near a rooftop air conditioner?
• How many branch circuits are required for car lighting, ventilation, and heating per elevator car?
• When running insulated conductors that enter a box, which gauge creates a requirement for additional protection?
• What is photometric analysis used for in lighting design?
• What is the role of a panelboard?
• What risk does unbalanced electrical circuits pose?
• How far must thermal insulation be installed from recessed lighting fixtures?
• How can you differentiate between a single-pole and three-way switch?
• Where should round boxes not be used?
• What is a transformer used for in electrical circuits?
• When are fuses typically used in electrical systems?
• What is a thermal overload relay?
• Which regulation mandates that all electrical installations comply with safety measures?
• What is the maximum distance an outlet can be from a kitchen sink?
• What is the minimum size ungrounded service entrance conductor for a 120-240 V single phase 200 amp service in a commercial building?
• What is an essential step to take before performing maintenance on electrical equipment?
• The maximum number of switches permitted to disconnect a service is ______?
• M I cable shall be secured within what distance of a panel?
• Which organization is responsible for enforcing the National Electrical Code?
• What type of boxes should be used in the floor for installations?
• What does NEC stand for?
• The code requires a blank cubic inches of free space for each number 10 wire in an outlet box.
• What color insulation typically indicates a ground wire?
• What does “junction box fill” refer to?
• For what situation would you use a step-down transformer?
• Where can the ratio of journeyman or master electricians to apprentice electricians in Michigan be found?
• In which scenarios would a circuit breaker be necessary?
• What is the smallest size conductor allowed for a ground ring?
• General purpose receptacles are prohibited from being installed on which of the following?
• What does balanced electrical circuits help to ensure?
• How many hours in advance must the inspection authority be notified before an inspection?
• Under what condition does a dishwasher not require GFCI protection?
• What is a key consideration when designing temporary wiring installations?
• What does the term "ampacity" refer to?
• Which of the following is NOT an accepted method for securing electrical wire?
• What is a splice box used for?
• What is the purpose of an electrical service disconnect?
• What does the National Electrical Code (NEC) say about lighting in habitable rooms?
• What is the maximum number of conductors allowed in a conduit without derating?
• What is the maximum allowable voltage for low-voltage lighting systems?
• What is the purpose of electrical bonding?
• What is the typical frequency of electrical systems in the U.S.?
• What is the required minimum height for a service drop above residential property?
• What should be used for an effective personal safety measure with temporary wiring?
• What are branch circuits primarily responsible for?
• What type of wire is required for outdoor installations?
• How often should electrical equipment be inspected?
• A light fixture that weighs more than what weight must be supported independently of the junction box?
• For what purpose are branch circuits used in an elevator system?
• How frequently should smoke alarms be tested?
• What must be installed within 10 feet of an above-ground pool?
• What does the abbreviation "THHN" stand for in electrical wire types?
• How should electrical wire be properly secured?
• What does "bonding" mean in electrical systems?
• What is the minimum vertical clearance for overhead power lines above streets?
• A 15 or 20 amp receptacle must be located within how many feet of a rooftop air conditioner?
• In Michigan, what is the maximum allowable load on a 15 amp circuit?
• What safety precautions should be taken when working with live circuits?
• What does an ohmmeter measure?
• A high impedance grounded system is limited to systems operating at what voltage or above?
• What must be done before beginning any electrical work?
• A minimum size conductor that may be installed in parallel is ______ AWG?
• What must be done when installing an electrical panel?
• What is the minimum distance a metal fence must be bonded when installed near a pool?
• What type of raceways are required for DC photovoltaic source or output current inside a building?
• What is a non-metallic sheathed cable commonly referred to as?
• What does a white wire typically indicate in residential wiring?
• When encountering rock during the installation of a ground rod, at what maximum angle should the rod be driven?
• Which of the following is an effect of outdated wiring?
• What is the purpose of circuit breakers in a panel?
• What is the purpose of a load center?
• The maximum number of number 6 AWG THW conductors allowed in a 1 inch PVC schedule 40 conduit is _____?
• What type of grounding system is typically used for residential properties?
• How far must a receptacle for laundry equipment be located from the intended location?
• How many days must an apprentice electrician register with the state of Michigan after initial employment?
• Which component is essential when ensuring the safety of elevated work locations?
• What does the NESC stand for in relation to electrical work?
• What is an appropriate action when working in a potentially hazardous location?
• In a residential installation, which of the following is an acceptable size for a service entrance conductor?
• What voltage does a standard household circuit usually operate at?
• What is the minimum size for an accessible hand hole in a metal light pole?
• What is the purpose of stranded conductors?
• What is the key difference between series and parallel circuits?
• What is a common use for a 3-way switch?
• In residential wiring, what purpose does a circuit breaker serve?
• When is a permit required for electrical work?
• An electrical device which consists of a frame, plunger, and coil to create a push or pull action is called what?
• What is the minimum size ground wire for a 200 amp service?
• What is the required length for the cord of a garbage disposal when installed with a cord and attachment plug?
• What is the maximum allowable temperature for conductors rated at 60 degrees Celsius?
• What is the minimum length requirement for ground rods?
• How is the term "load center" defined in electrical work?
• A feeder in a single-family dwelling supplies a load of 75 A of electrical space heating and 25 A of air conditioning. The required capacity of the feeder is _____ amps?
• What does a circuit need to be considered a "correctly grounded" system?
• What is the purpose of occupancy sensors in lighting fixtures?
• What type of lamp holders are required for fixed lighting units on a 30 amp branch circuit?
• Which type of protection is required for personnel for all temporary wiring installations?
• What material should be used to install the feed to the wet niche fixture?
• How does a capacitor work in electrical systems?
• What does a watt-hour meter measure?
• Which type of conduit is commonly used for outdoor installations?
• What is an electrical receptacle?
• What factor affects the ampacity of conductors when de-rating?
• What is a primary reason for using personal protective equipment (PPE) when working with electrical systems?
• Which of the following is true regarding circuit continuity?