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Questions and Answers
Which of the following standards must be met if a feeder conductor carries the total load supplied by the service conductors with an ampacity of 50 amps?
Where more than one building exists on the same property under single management, which of the following are additional feeders or branch circuits permitted to supply?
Which of the following is true regarding the use of 5-wire feeders?
Which of the following must be included in a DC power system located on the premises?
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Which of the following methods can be used to consider the non current-carrying metal parts of equipment as effectively grounded?
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What is the minimum number of GFCI receptacles that must be installed within 3 feet of the washing machine location?
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For a 30 amp receptacle connected to a 30 amp branch circuit supplying two or more outlets, what is the maximum total cord-and-plug load allowed?
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Which of the following can be used as an equipment grounding conductor when run with circuit conductors?
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Circuits between 120-277 volts can supply power to which of the following?
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What is the minimum size for a 20 amp branch circuit copper conductor?
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Which requirement(s) must restricted-access, adjustable-trip circuit breakers meet?
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What receptacle requirement applies to the laundry area in a single-family dwelling unit?
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According to the Philippine Electrical Code, if a single non-motorized equipment receptacle is fed by an individual 30 amp branch circuit, the receptacle amperage rating must be:
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When conductors are run in parallel raceways, the equipment grounding conductors must:
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For a surge arrester with a nominal voltage rating of less than 1000 volts, the minimum size of the grounding conductor should be:
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In a building with multiple nominal voltage systems, ungrounded feeder conductors must be:
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According to the Philippine Electrical Code, which of the following statements is true regarding the installation of electrical equipment?
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Which of the following is a requirement for the installation of electrical conductors in the Philippine Electrical Code?
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Where are grounded conductors required to be insulated?
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What is the requirement for the metal disconnecting means at a remote building supplied by a feeder with an equipment grounding conductor?
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What is the required ampacity for circuit conductors supplying power conversion equipment included as part of an adjustable-speed drive system?
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What is the required ampere rating for the disconnection means for a 400 volt motor circuit?
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Which requirement must be met for a 15 amp receptacle installed in a wet location?
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If a feeder supplies a remote building with an equipment grounding conductor, what is the proper installation method for the metal disconnecting means?
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Which statement accurately describes a requirement for equipment installation?
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When using a transformer to create a three-phase, four-wire distribution system from a three-phase, three-wire ungrounded system, which of the following installation requirements must be met?
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What is the purpose of the installation requirements mentioned in the text?
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If a transformer is used to create a three-phase, four-wire distribution system, which of the following statements is true?
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Which of the following is NOT a requirement for installing equipment?
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Study Notes
Electrical Code Requirements
- At least one receptacle must be installed within 3 feet of the washing machine location.
- A minimum of two GFCI receptacles are required.
Feeder Conductors
- If a feeder conductor carries the total load supplied by the service conductors with an ampacity of 50 amps, the feeder ampacity must be greater than the service conductor ampacity.
- Additional feeders or branch circuits are permitted to supply optional standby systems, fire pumps, and parallel power production systems in cases where more than one building exists on the same property under single management.
DC Power Systems
- DC power systems located on the premises must include a grounding connection at the power source, a grounding electrode conductor which is at least #10 AWG, and a grounding ring.
Equipment Grounding
- The non-current-carrying metal parts of equipment shall be considered effectively grounded by use of a separate grounded circuit conductor, running in a separate raceway.
- An equipment grounding conductor that is run with circuit conductors is permitted to be a solid copper busbar, flexible metal conduit, or liquid-tight conduit.
Circuit Voltages
- Circuits over 120 volts but not exceeding 277 volts between conductors are permitted to supply power to auxiliary equipment of electric-discharge lamps mounted in permanently installed fixtures, luminaries equipped with mogul-base screw shell lamp holders, and screw shell type lamp holders.
Branch Circuits
- The minimum size copper circuit wire for a 20 amp branch circuit conductor is 3.5 sq mm copper.
- A 30 amp branch circuit feeding a single non-motorized equipment receptacle must have a receptacle amperage of 30 amps.
Laundry Area
- The laundry area in a single-family dwelling unit must have at least one receptacle.
Parallel Conductors
- Conductors run in parallel raceways must have equipment grounding conductors which are run in parallel in each raceway.
Surge Arresters
- A surge arrester of less than 1000 volts nominal shall have a ground connecting conductor which is no smaller than 3.5 sq mm.
Ungrounded Feeder Conductors
- When there is more than one nominal voltage system in the building, ungrounded feeder conductors must be separately identified.
Disconnecting Means
- The metal disconnecting means at a remote building, supplied by a feeder with an equipment grounding conductor, is required to be connected on the service load side of the feeder.
Adjustable-Speed Drive Systems
- Circuit conductors that supply power conversion equipment included as part of an adjustable-speed drive system must have an ampacity of at least 125 percent of the motor’s full-load current.
Motor Circuits
- The disconnection means for a 400 volt motor circuit must have an ampere rating of at least 125 percent of the motor’s full-load current.
Wet Locations
- A 15 amp receptacle installed in a wet location must meet installation requirements, including being protected from rain or water runoff, having an attachment plug cap inserted, and having an enclosure that is weatherproof.
Restricted Access
- Equipment installed in a room that is only accessible to a qualified person, or equipment installed on a balcony that is elevated enough to prohibit access by unqualified people, or equipment installed or mounted at least 8 feet above floor level, is considered restricted access.
Transformers
- When a transformer is used to create a three-phase, four-wire distribution system from a three-phase, three-wire ungrounded system, the transformer must meet installation requirements, including not being switched, being directly connected to the ungrounded phase conductors, and not being provided with overcurrent protection that is independent from the main switch and common-trip overcurrent protection for a three-phase, four-wire system.
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Description
Test your knowledge on the Philippine Electrical Code with this quiz for the Board of Electrical Engineering Registered Master Electrician Licensure Examination. Select the correct answer for each question by marking only one answer on the provided answer sheet.
