PEC SET #5

A receptacle outlet rated 15 A or 20 A; 250 V shall be installed in an accessible location to service heating and air conditioning equipments on rooftops, in attics or crawl spaces, such outlet shall be located on the same level and within ___ mm of the equipments. a. 7600 b. 8000 c. 8500 d. 9000

A

An electrocution caused by accident or equipment malfunction can be prevented by installing an electrical device called ___ to the circuit. a. ground fault circuit interrupter b. fuse c. fault interrupter d. circuit breaker

A

Branch circuits with voltages exceeding 230 V nominal between conductors and not exceeding ___ V nominal to ground shall be permitted to supply listed electric discharge and incandescent lighting fixtures or permanently connected utilization equipment. a. 277 b. 240 c. 220 d. 230

A

The point of attachment of the service drop conductors to a building shall not be less than mm above finished grade. a. 3600 b. 2500 c. 3000 d. 3500

C

All ___ 125 V or 250 V single phase receptacles installed in bathrooms, outdoors, garages, crawl spaces, unfinished basements, wet bar sinks and kitchens of dwelling units have ground fault circuit interrupter protection for personnel. a. 15 A or 20 A b. 20 A or 30 A c. 30 A or 40 A d. 40 A or 50 A

A

Conductors are considered outside a building if installed under not less than ____ mm of concrete beneath the building or when installed inside a building in a raceway that is encased in concrete not less than ___ mm thick. a. 50, 50 b. 50, 100 c. 100, 50 d. 100, 100

A

Electrodes of non-ferrous metal plates shall be at least ___ mm in thickness. a. 1.5 b. 3 c. 2 d. 4

A

In open wiring on insulators and concealed knob and tube wiring conductors smaller than 8.0 ,,^2 shall be supported rigidly on non-combustible and non-absorbent insulating materials and shall not be in contact with any other objects within any other objects within ___ mm from a splice or tap and at intervals not exceeding ___ mm. a. 150, 1400 b. 100, 1300 c. 150, 1500 d. 100, 1,500

A

Outlets for heavy duty lampholders shall be computed at a minimum of ___ VA per outlet. a. 600 b. 700 c. 750 d. 800

A

Sign and outline lighting outlets shall be computed at a minimum of ___ VA for each required branch circuit. a. 1200 b. 1800 c. 2000 d. 2500

A

The ampacity of the service entrance conductors before the application of any adjustment and correction factors shall not be less than the sum of the non-continuous loads plus ___ percent of the continuous loads. a. 125 b. 115 c. 150 d. 180

A

Electrodes of rods of iron or steel shall be at less ___ mm in diameter. a. 16 b. 20 c. 30 d. 40

A.

In dwelling units, it shall be permissible to apply a demand factor of ___ percent to the nameplate rating load of 4 or more appliances fastened in place other than ranges, etc served by the same feeder. a. 60 b. 75 c. 65 d. 80

B

In dwelling units, load of not less than ___ VA shall be included for each 2-wire laundry branch circuit a. 3000 b. 1500 c. 2000 d. 2500

B

Plate electrodes shall be installed not less than ___ mm below the surface of the earth. a. 200 b. 750 c. 300 d. 400

B

Plug fuses shall be permitted to be used in circuits not exceeding ___ V line to line. a. 300 b. 250 c. 350 d. 400

B

Service conductors installed as open conductors or multi conductor without an overall outer jacket shall have a clearance of not less than ___ mm from windows that are designed to be opened, porches, balconies, ladders, etc. a. 2000 b. 900 c. 1800 d. 1500

B

Service drop and service lateral conductors shall not be smaller than ___ mm^2 copper. a. 3.5 b. 8.0 c. 14 d. 5.5

B

Service drop conductors shall have a vertical clearance of not less than ___ mm above the roof surface. a. 3000 b. 2400 c. 1500 d. 2000

B

Where connected to a branch circuit having a rating in excess of ___ A lampholder shall be of the heavy duty type. a. 50 b. 20 c. 60 d. 15

B

A metal underground metal pipe in direct contact with the earth fir ___ mm or more and electrically continuous to the points of connection of the grounding electrode conductor shall be permitted to be bonded together with other grounding electrodes. a. 1,500 b. 2,500 c. 3,000 d. 2,000

C

Service drop conductors shall have minimum vertical clearance of ___ mm from areas or sidewalks accessible only to pedestrians where the voltage does not exceed 300 V to ground. a. 2700 b. 2800 c. 3000 d. 2900

C

For services of 1 KV, the surge arester grounding conductor shall not be smaller than ___ mm^2 copper. a. 0.75 b. 5.5 c. 2.0 d. 3.5

C.

In dwelling units, hallways of ___ mm or more in length shall have at least one receptacle outlet. a. 2000 b. 2500 c. 1500 d. 3000

D

Temporary electrical power and lightning installations shall be permitted for a period of ___ days for Christmas lightning. a. 150 b. 60 c. 120 d. 90

D

The electrode shall be installed and driven to a depth of not less than ___ mm into the soil except that where rock bottom is encountered, the electrode shall be driven at an oblique angle not to exceed 45 degrees from the vertical shall be buried in a trench that is less than 750 mm deep. a. 1,500 b. 2,000 c. 1,000 d. 2,400

D

Conductors supported on poles shall provide a horizontal climbing space not less than ___ mm if power conductors are BELOW communication conductors. a. 760 b. 500 c. 400 d. 450

A

A single electrode consisting of a rod or pipe or plate that does not have a resistance to ground of ___ ohras or less shall be augmented by one additional electrode. a. 30 b. 25 c. 35 d. 20

B

A fuse is a ___ device. a. 3 phase thermal b. 1 phase thermal c. 3 phase protective d. 1 phase protective

D

Conductors supported on poles shall provide a horizontal climbing space not less than ___ mm for 300 V or less and not less than 760 mm for over 300 V if power conductors are alone or ABOVE communication conductors a. 600 b. 500 c. 400 d. 450

A

Electrodes of pipe electrodes shall not be smaller than ___ mm in diameter and where iron or steel shall have the other surface galvanized. a. 20 b. 15 c. 32 d. 35

A

For OVER 600 V, nominal open individual conductors shall not be smaller than ___ mm^2 copper. a. 14 b. 8.0 c. 5.5 d. 22

A

Stainless steel rods less than 16 mm in diameter, non ferrous rods or their equivalent shall be listed and shall not be less than ___ mm in diameter. a. 13 b. 20 c. 25 d. 30

A.

Branch circuits larger than ___ A shall supply only non-lighting loads. a. 60 b. 30 c. 40 d. 50

D

In dwelling unit, small appliances, laundry and bathroom branch circuits shall have a minimum ampere rating of ___ A. a. 15 b. 20 c. 30 d. 40

B

Receptacle outlets in dwelling units shall be installed so that no point along the floor line in any wall space is more than ___ mm. measured horizontally from an outlet in the space. a. 1200 b. 1800 c. 1600 d. 1000

B

For voltages not over 600 V, nominal overhead spans of open conductors and open multi-conductor cables shall have clearances (vertical, diagonal, horizontal) not less than ____ mm from signs, chimneys, antennas, etc. a. 800 b. 600 c. 900 d. 500

C

For a one family dwelling unit and each unit of a two family dwelling unit, that is at grade level at least one receptacle outlet accessible at grade level and not more than ___ mm. above grade shall be installed at the back and front of the dwelling. a. 3500 b. 3000 c. 2500 d. 2000

D

The minimum size for lighting branch circuit conductors shall be ___ mm^2. a. 5.5 b. 0.75 c. 2.0 d. 3.5

D

For a one family dwelling, the service disconnecting means shall have a rating of not less than ___ A, 3-wire a. 60 b. 50 c. 40 d. 70

A

For installations consisting of not more than two, 2-wire branch circuits, the service disconnecting means shall have a rating of not less than ___ A a. 30 b. 20 c. 50 d. 40

A

For show window lighting a load of not less than ___ VA shall be included for each lineal meter of show window measured horizontally along its base, a. 660 b. 800 c. 900 d. 700

A

For track lighting other than dwelling units or guest rooms of motels or hotels an additional load of ___ VA shall be included for every 600 mm of lighting track or fraction thereof. a. 150 b. 300 c. 400 d. 500

A

Where the overcurrent device is rated over ___ A, the ampacity of the conductors it protects shall be equal to or greater than the rating of the overcurrent device. a. 800 b. 600 c. 500 d. 700

A

XBranch circuits with voltages exceeding 277 V, nominal to ground and not exceeding ___ V nominal between conductors shall be permitted to supply auxiliary equipment of electric discharge lamps with fixtures mounted not less than 760 mm in height on poles for outdoor area illumination like roads or mounted not less than a height of 5500 mm on tunnels. a. 600 b 650 c. 750 d. 900

A

A concrete encased electrode consisting at least ___ mm zinc galvanized coated steel reinforced or other electrically conductive rods not less than ___ mm in diameter shall be permitted to be bonded together with other grounding electrodes. a. 5,000, 13 b. 6,000, 13 c. 5,000, 12 d. 6,000, 12

B

Electrodes of iron or steel plates shall be at least ___ mm in thickness. a. 10 b. 6 c. 5 d. 8

B

For OVER 600 V, nominal conductors in a cable installed in the open shall not be smaller ___ mm^2 copper. a. 2.0 b. 8.0 c. 5.5 d. 3.5

B

For a dwelling unit having a floor area of not more than 50 mm^2 it shall be permitted to have a single, 20 A, 2-wire branch circuit provided the total load does not exceed ____ VA. a. 2000 b. 3680 c. 1200 d. 1500

B

For electric ranges of 8 3/4 KW or more rating, the minimum branch circuit rating shall be ___ A. a. 50 b. 40 c. 30 d. 20

B

For installations to supply only limited loads of a single branch circuit, the service disconnecting means shall have a rating of not less than ___ A a. 20 b. 15 c. 30 d. all of these

B

Heavy duty lampholder shall have a rating of not less than 660 watts if the medium type and not less than ___ watts if of any other types. a. 600 b. 750 c. 500 d. 400

B

Rod and pipe electrodes shall not be less than ___ mm in length a. 1,000 b. 2,400 c. 1,500 d. 500

B

Service drop conductors shall not be less than ___ mm above residential property and driveways and those commercial areas not subject to truck traffic where the voltage exceeds 300 V to ground. a. 4100 b. 4500 c. 3800 d. 4000

B

Service drop conductors shall not be less than ___ mm over public streets, alleys, roads, and parking areas subject to truck traffic and other lands such as cultivated, grazing, etc. a. 4000 b. 5500 c. 5000 d. 4500

B

Service drop conductors shall not be less than ___ mm over residential property and drive ways and those commercial areas not subject to truck traffic where the voltage does not exceed 300 V to ground. a. 3400 b. 3600 c. 3500 d. 3000

B

Where installed in the outside, the length of the equipment bonding jumper shall not exceed ___ mm and shall be routed with the raceway or enclosure. a. 1,000 b. 1,800 c. 1,500 d. 2,000

B

Which of these is not a factor in the selection of fuse rating for protection of a branch circuit? a. system voltage b. system impedance c. branch full load current d. ampacity of branch circuit conductors

B

Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets in dwelling units unless located within __ mm. of the wall a. 700 b. 450 c. 600 d. 500

B `

The minimum size of grounding electrode conductor shall be ___ mm^2 copper. a. 5.5 b. 8.0 c. 14 d. 3.5

B.

Where used outside, aluminum or copper clad aluminum grounding conductors shall not be installed within ___ mm of the earth. a. 200 b. 450 c. 300 d. 500

B.

Cables that are not approved for mounting in contact with a building shall be mounted on insulating supports installed at intervals not exceeding ___ mm and in a manner that will maintain a clearance of not less than 50 mm from the surface which they pass. a. 3500 b. 4000 c. 4500 d. 5000

C

Cartridge fuses shall be permitted to be used in circuits not exceeding ___ V line to line. a. 400 b. 350 c. 300 d. 250

C

Each plate electrode shall expose not less than ___m^2 of surface to external soil. a. 0.282 b. 3/5 c. 0.186 d. 0.265

C

For 600 V, nominal or less open individual conductors shall not be smaller than 5.5 mm^2 copper for spans up to ___ m. a. 25 b. 20 c. 15 d. 10

C

For OVER 600 V, nominal or less and spans more than 15 m, open individual conductors shall not be smaller than ___ mm^2 copper. a. 5.5 b. 3.5 c. 8.0 d. 2.5

C

For branch circuits supplying loads consisting of motor operated utilization equipment that is fastened in place and that has a motor larger than 1/8 hp in combination with other loads, the total computed load shall be based on ____ percent of the largest motor load plus the sum of the other loads. a. 140 b. 150 c. 125 d. 115

C

For circuit of more than 1 KV, the conductor between arrester and line shall not be smaller than ___ mm^2 copper or aluminum. a. 8.0 b. 3.5 c. 14 d. 5.5

C

For voltages not over 600 V , nominal overhead spans of open conductors and open multi-conductor cables shall have a vertical clearance of not less than ___ mm above the roofs of buildings a. 1000 b. 2000 c. 2500 d. 1500

C

In dwelling unites, receptacle outlets shall be installed so that no point along counter space wall line is more than ___ mm. or greater and a short dimension of 300 mm or greater. a. 300 b. 400 c. 600 d. 700

C

In dwelling units and guest rooms of he voltage shall not exceed ___ V, nominal between conductors that supply the lighting fixtures, cor and plug connected loads, 1440 VA nominal or less than 1/4 hp. a. 250 b. 110 c. 230 d. 120

C

In dwelling units, one receptacle outlet shall be installed at each island counter space with a long dimension of ___ mm. or greater and a short dimension of 300 mm. or greater a. 300 b. 400 c. 600 d. 500

C

In dwelling units, receptacle outlet shall be installed at each wall counter space that is ___ mm. or wider a. 250 b. 150 c. 300 d. 200

C

In dwelling units, receptacle outlets shall be located above but not more than ___ mm. above the counter top. a. 700 b. 600 c. 500 d. 450

C

In dwelling units, the load for electric clothes dryers shall be ___ VA or the nameplate rating whichever is larger for each dryer served. a. 6000 b. 4000 c. 5000 d. 5500

C

In systems of 1 KV or more, the minimum insulation level for neutral conductors of solidly grounded circuits shall be ___ V. a. 800 b. 400 c. 600 d. 200

C

Overhead conductors for festoon lighting shall not be smaller than ___ mm^2, unless the conductors are supported by messenger wire. a. 2.0 b. 8.0 c. 3.5 d. 5.5

C

Secondary circuits and potential transformers shall be grounded where the primary winding are connected to circuits of ___ V or more to ground and where on switchboards shall be grounded irrespective of the voltage. a. 50 b. 100 c. 300 d. 150

C

The grounding conductor for secondary circuits of instrument transformers and for instrument cases shall not be smaller than ___ mm^2 copper. a. 8.0 b. 5..5 c. 3.5 d. 2.0

C

The minimum size of equipment bonding jumpers or equipment grounding conductors shall be ___mm^2 a. 0.75 b. 5.5 c. 2.0 d. 3.5

C

Where buildings exceed 3 stories or 15 m in height, overhead lines shall be arranged so that a clear space at least ___ mm wide will be left adjacent to the buildings to facilitate the raising of ladders when necessary for firefighting. a. 1500 b. 1200 c. 1800 d. 1000

C

A ground ring encircling the building or structure direct contact with the earth at a depth below the earth's surface of not less than ___ mm consisting of at least ___ mm of bare copper conductor not smaller than 30 mm^2 shall be permitted to be bonded with other grounding electrodes. a. 600, 5,000 b. 760, 5,000 c. 600, 6,000 d. 750, 6,000

D

About grounding, what is the reason to connect metal enclosures for electrical conductors to the grounding system? a. induction b. surge c. safety d. current path continuity

D

Appliance receptacle outlets installed in a dwelling unit for specific appliances such as laundry equipment shall be installed within ___ mm. of the intended location of the appliance. a. 3000 b. 2500 c. 2000 d. 1800

D

At least ___mm of free conductor, measured from the pount in the box where it emerges form its raceway shall be left at each outlet junctions and switch point for splices or connection of fixtures or devices. a. 100 b. 200 c. 180 d. 150

D

Conductors of ___ mm^2 and larger comprising each phase shall be permitted to be connected in parallel to form a single conductor. a. 22 b. 30 c. 38 d. 50

D

Conductors on poles shall have a separation of not less than ___ mm where not placed on racks or brackets. a. 200 b. 150 c. 100 d. 300

D

For circuits of over 600 V the conductor shall not be bent to a radius less than ___ times the over all diameter for non shielded or lead covered conductors. a. 10 b. 7 c. 9 d. 8

D

In all spans exceeding ___ m, overhead conductors for festoon lighting shall be supported by messenger wire. a. 20 b. 18 c. 15 d. 12

D

In branch circuits rated 15 A, 20 A and 30 A, the rating of any one cord and plug connected utilization equipment shall not exceed ___ percent of the branch circuit ampere rating. a. 50 b. 60 c. 70 d. 80

D

In dwelling units, the load shall be computed at ___ VA for each 2-wire small appliance branch circuit a. 3000 b. 2500 c. 2000 d. 1500

D

In non-dwelling units, receptacle loads are computed at not more than ___ VA per outlet a. 300 b. 250 c. 200 d. 180

D

In show windows at least one receptacle outlet shall be installed directly above a show window for each ___ lineal meter or major fraction thereof of show window area measured horizontally at its maximum length. a. 1 b. 2 c. 4 d. 3.6

D

Open conductors shall be separated from open conductors of other circuits or systems by not less than ___ mm. a. 150 b. 50 c. 200 d. 100

D

Service cables shall be supported by straps or other approved means within ___ mm or every service head, gooseneck or connection to a raceway at an intervals not exceeding 750 mm. a. 600 b. 500 c. 400 d. 300

D

Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the minimum branch circuit conductor size before the application of any adjustment or correction factors, shall have an allowable ampacity equal to or greater than the noncontinuous load plus ___ percent of the continuous load. a. 200 b. 115 c. 150 d. 125

D

Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the continuous load plus ____ percent of the continuous load. a. 115 b. 180 c. 150 d. 125

D

Where installed in raceways, conductors of size ___ mm^2 or larger shall be stranded. a. 2.0 b. 3.5 c. 5.5 d. 8.0

D

Where within ___ mm of any building or structure other than supporting poles and towers, open individual overhead conductors shall be insulated a. 1500 b. 2500 c. 3000 d. 2000

D

Where more than one electrode is used, each electrode of one grounding system shall not be less than ___mm from any other electrode of another grounding system. a. 2,100 b. 500 c. 1,000 d. 1,900

D.