PEC. 601-650

A. 20 A

A 3.5 mm TW copper conductor has an ampacity equal to ____. A. 20 A B. 15 A C. 30 A D. 12 A

A. 30 A

A 5.5 mm² TW copper has a conductor ampacity of ____. A. 30 A B. 40 A C. 20 A D. 50 A

A. 0.75 mm 2

A lighting fixture shall be wired with a flexible lighting cord with a cross sectional area of NOT less than a certain minimum area. Which is this? A. 0.75 mm 2 C. 0.50 mm 2 B. 2.00 mm 2 D. 1.25 mm 2

B. 80 A

A three- phase general purpose squirrel cage motor draws a full load current of 40 A. What id the maximum size of time delay fuses that may be used for short circuit protection? A. 120 A B. 80 A C. 40 A D. 100 A

A. high

A warning sign shall be posted where ____ voltage is available in service equipment. A. high B. low C. both A and B D. neither A and B

D. 100 mm

Circuits with a nominal voltage of 600 V or less in rigid metal or non-metallic conduit and placed under a minimum of 100 mm thick concrete exterior stab with no vehicular traffic shall have cover distance of ____. A. 200 mm B. 300 mm C. 400 mm D. 100 mm

C. of fire resistant construction

Completely enclosed, ventilated transformers equipped with a 80C rise insulation may be installed in a room ____. A. with concrete walls B. designed as a vault C. of fire resistant construction D. built with tile blocks

B. conductors

Conductors from the service point to the service disconnecting means are considered service____. A. subpanels B. conductors C. both A and B D. neither A and B

B. vertical

Conductors may travel horizontally through ____ sections of switchboards if isolated from busbars by a barrier. A. horizontal B. vertical C. both A and B D. neither A or B

B. 85%

Conductors supplying a group of motor-generator arc welders are sized at ____of the third largest welder plus the percentage of the other welders. A. 65% B. 85% C. 70% D. 75%

D. 90

Conductors used in lightning protection system shall have no bend forming an included angle of less than ______. A. 60° B. 75° C. 50° D. 90°

A. solder

Connection or fittings shall not connect grounding electrode conductors to equipment by means of _______. A. solder B. lugs C. pressure connectors D. clamps

D. 125

Continuous duty loads shall be figured at ____ percent for branch circuits. A. 100 B. 115 C. 120 D. 125

C. either A or B

Control conductors used for load management can be routed with the service entrance conductors in the same _______. A. raceway B. cable C. either A or B D. neither A or B

B. qualified person

Doors leading into a transformer vault shall be kept locked and access allowed only to ______. A. the owner B. qualified person C. general public D. any person working in the building

D. 2,400 mm

Down conductors on a heavy duty smoke or vent stacks shall be protected from physical damage of NOT less than ____ above finish grade. A. 2,000 mm B. 2,300 mm C. 2,500 mm D. 2,400 mm

A. 3,000 mm

Each length of non-metallic conduit shall be clearly and durably marked at least every ______ as required. A. 3,000 mm B. 2,000 mm C. 4,000 mm D. 5,000 mm

B. greater

Each lighting and appliance branch circuit panel board shall be protected individually on the supply side by not mare than two main CBs or two sets of fuses having a combined rating not ____ than that of the panel board. A. less B. greater C. both A and B D. neither A and B

C. 900 mm

Electrical metallic tubing shall be securely fastened in place within ____ of each outlet box, junction box, cabinet or fitting. A. 300 mm B. 600 mm C. 900 mm D. 800 mm

A. The line side of the service

Emergency power panel conductors supplying a building are tapped on ____. A. The line side of the service B. Any subfed panel C. Any circuit breaker main D. Any feeder circuit

A. 10 mm

Enclosures for over-current devices in damp or wet locations shall be identified for use in such locations and shall be mounted so there is at least _____ air space between the enclosure and the wall. A. 10 mm B. 12 mm C. 15 mm D. 20 mm

A. finish

Exposed AC cable shall closely follow the ____ of the building. A. finish B. studs C. both A and B D. neither A and B

B. 125

For circuits supplying loads consisting of motor operated utilization equipment that is fastened in place and that has a motor larger than 0.125 hp in combination with other loads, the total computed load shall be on ____ percent of the largest motor load plus the sum of the other loads. A. 100 B. 125 C. 150 D. 130

B. 0.32

For the purpose of lighting protection, a smoke or vent stack is classified as heavy duty if the cross sectional area of the flue is greater than ____ square meter and the height is greater than 23 meters. A. 0.50 B. 0.32 C. 0.42 D. 0.27

B. two

Ground rod clamps shall be secured with at least ____ bolt(s) or cap screws A. one B. two C. three D. four

B. Counterpoise

Grounding conductor installed over lightning cables for the purpose of interconnecting the system ground electrodes and providing lightning protection for the cables. A. Anchor B. Counterpoise C. Elevation rod D. Air terminal

C. both A and B

Lead-in antenna conductors for television or radio equipment shall be securely _____ to antennas. A. attached B. fastened C. both A and B D. neither A or B

A. equal to or greater than

On circuits of less than 1000V, the rating of the surge arrester shall be ___ the maximum continuous phase to ground power frequency voltage available at the point of application. A. equal to or greater than B. not less than C. not less than 125% D. none of these

D. all of these

Over current protection devices in emergency system shall _____. A. be coordinated B. clear in steps C. not trip the main device D. all of these

D. 25 mm

RME Board April 1996 In a switchboard there shall be an air space of at least _____ between the energized metal part and the door or the cabinet. A. 30 mm B. 20 mm C. 15 mm D. 25 mm

A. Minus 5% to plus 10%

RME Board October 1996 AC equipment on board watercraft shall operate satisfactorily at the following voltage limitations. Which one is correct? A. Minus 5% to plus 10% B. Minus 6% to plus 10% C. Minus 10% to plus 6% D. Minus 10% to plus 10%

B. 300 mm

Resistors and reactors shall not be installed in close proximity to combustible materials such that it constitutes a fire hazard. What minimum clearance is required by the Code? A. 250 mm B. 300 mm C. 400 mm D. 100 mm

A. openings

Service conductors shall not be run in such a manner as to block _____ to buildings. A. openings B. driveways C. both A and B D. neither A and B

C. both A and B

Service equipment rated over 600 V located on mezzanine floors shall be required to be accessible by permanent ____. A. stairways B. ladders C. both A and B D. neither A and B

A. 200

The OCPD for arc welders with transformers shall NOT exceed _____ percent of the primary full load current. A. 200 B. 300 C. 250 D. 400

D. four

The PEC permits ____ 90° bends in a single conduit run A. one B. two C. three D. four

C. 180

The branch circuit load for continuous duty receptacles shall be calculated at ____ VA per receptacle. A. 150 B. 175 C. 180 D. 200

B. phase

The ground conductor shall be equal to the largest ____ conductor. A. bonding B. phase C. ungrounded service D. equipment

B. 5,000

The load for household electric clothes dryer in dwelling is the larger of the nameplate or ____ VA. A. 4,000 B. 5,000 C. 6,000 D. 8,000

A. five

The long time rating for x-ray equipment is based on an operating time of ____ minutes or longer. A. five B. eight C. six D. ten

D. 100%

The long time rating used to select OCPDs to protect circuits to x-ray equipment shall be _____. A. 125% B. 150% C. 175% D. 100%

D. 2.0 mm 2

The surge arrester for services less than 1,000 volts connected by copper conductor to grounding electrode conductor or the equivalent grounding terminal shall NOT be smaller than _____. A. 8.0 mm 2 C. 3.5 mm 2 B. 5.5 mm 2 D. 2.0 mm 2

C. Service lateral

The underground service conductors between the street main, including any risers at the pole or other structure or from transformer and the first point of connection to the service entrance of the conductors in a terminal box. The point of connection is considered to be the point of entrance of the service conductors into the building. A. Service entry B. Service raceway C. Service lateral D. Service drop

C. six

There shall be no more than ______ disconnects per service grouped in any location. A. four B. five C. six D. three

B. long

Voltage drop shall be considered to service laterals run at _____ distance. A. short B. long C. both A and B D. neither A and B

B. RHW

What type letter for conductors has a trade name "moisture and heat resistant rubber"? A. RH B. RHW C. XHHW D. THW

B. on

When a circuit breaker handles are operated vertically rather than horizontally, the "up" position of the handle shall be the ___ position. A. off B. on C. neutral D. any of these

C. 1,900 mm

Where buildings exceed three stories or 15 meters in height, overhead lines shall be arranged, where practicable, so that a clear space of at least ____ wide will be left to facilitate title raising of ladders when necessary for fire fighting. A. 2,000 mm B. 1,800 mm C. 1,900 mm D. 1,500 mm

D. Fixtures and lighting equipment operating at over 250 V shall be grounded

Which of the following statements on lighting fixtures NOT correct? A. Outdoor lighting fixtures and associated equipment shall be permitted to be supported by trees B. Metal fixtures and enclosures rated at 250 V and installed up in the ceiling shall be grounded. C. Stranded conductors shall be used in wiring a fixture supporting chain and other movable flexible parts. D. Fixtures and lighting equipment operating at over 250 V shall be grounded

C. Lamps and lamp holders for fixed lighting that are located above vehicles shall be installed not lower than 2,500 mm

Which of the following statements on winding in commercial garages and shops is NOT correct? A. The ground conductor shall be connected to the ground terminal of the utilization equipment B. Receptacles, attachment plugs and similar devices shall be of the polarized type C. Lamps and lamp holders for fixed lighting that are located above vehicles shall be installed not lower than 2,500 mm D. Battery chargers and batteries being charged shall not be located in location classified as hazardous