Voice Data Video (VDV) Practice Test

Where power conductors are introduced to solely provide power to the communications equipment, power circuit conductors and communications circuit conductors shall maintain a minimum of _______ separation. a. 0.25 inches b. 0.5 inches c. 2 inches d. 6 inches

a. 0.25 inches REF: [NEC] 800.133(A)(1)(d) exception note 2

Type CMX communications cable less than _______ shall be permitted to be installed in one and two family dwellings. a. 0.25 inches diameter b. a bundle size of 5/8" diameter c. two cables per bundle d. CMX type cables are not allowed in one and two family dwellings

a. 0.25 inches diameter REF: [NEC] 800.113(L)(2)

What is the height of a standard single RU telecommunications rack unit? a. 1.5 inches b. 2 inches c. 1.75 inches d. 1.25 inches

c. 1.75 inches

All conductors installed inside a radio and television equipment transmitting station shall be separated by at least ________ from the conductors of any electric light, power or signaling circuit. a. 50 mm (2 in.) b. 75 mm (3 in.) c. 100 mm (4 in.) d. 300 mm (12 in.)

c. 100 mm (4 in.) REF: [NEC] 810.70

What article would you find information regarding Radio & Television equipment? a. Article 720 b. Article 725 c. Article 770 d. Article 810

d. Article 810

The communications Point of Entrance is defined by the NEC as the point at which the wire emerges from which of the following? a. Concrete floor slab b. Rigid metal conduit c. Terminal Box d. Both a and b

d. Both a and b REF: [NEC] 800.2

If you have a return air ceiling, what kind of cable would you install? a. Coax b. CMG c. Fiber d. CMP

d. CMP

Which type of communication cable would you use between floors? a. CM b. CMP c. CMG d. CMR

d. CMR REF: [NEC] 800.179(B) or 800.154(a)

Communication systems in patient care areas (hospitals) should be ? a. Installed in type CMHC cables b. Installed in separate metal raceways c. Separated at least 12 inches from power conductor raceways d. Constructed with equivalent insulation and isolation to that required for the electrical distribution system

d. Constructed with equivalent insulation and isolation to that required for the electrical distribution system REF: [NEC] 517.80

What two types of optical fiber cables are permitted to be installed in listed plenum raceways (installed as described in 300.22(B) and 300.22(C)? a. OFC & OFCG b. OFNR & OFNG c. OFCP & OFCR d. OFCP & OFNP

d. OFCP & OFNP REF: [NEC] 770.154(A) & 770.113(C)(2)

Which of the following is not considered a communications circuit? a. Video b. Data c. Interactive Services d. Radio

d. Radio REF: [NEC] 800.2

Which optical fiber cable could be substituted for OFC? a. OFN b. OFCR c. OFNP d. all of the above

d. all of the above REF: [NEC] 770.154(B)

In one and two family dwellings for CATV, the grounding conductor shall _____. a. be as short as practicable b. not exceed 20 ft. in length c. not be smaller than 14 AWG d. all of the above

d. all of the above REF: [NEC] 820.100(A)(4) Exception

Community antenna television grounding conductors shall be _______. a. bare copper b. bare aluminum c. insulated d. any of the above

d. any of the above REF: [NEC] 820.100(A)(1)&(2)

This device helps diverts high voltage spikes to ground and is used in fused-type communications primary protectors. a. fuse b. isolator c. insulator d. arrester

d. arrester REF: [NEC] 800.90(A)(2)

Which of the following is not covered in Article 810? a. dish antennas b. amateur radio equipment c. television receiving equipment d. carrier current coupling equipment

d. carrier current coupling equipment REF: [NEC] 810.1

Direct-buried separation of underground CATV radio & television conductors from conductors of any light or power circuits or class 1 circuits (disregard exceptions). a. 12 inches b. 18 inches c. 24 inches d. 36 inches

a. 12 inches REF: [NEC] 820.47(B)

A parallel circuit, having three branches, has a total resistance of _______ if the branches had the following resistance - 100 ohms, 100 ohms and 50 ohms. a. 25 Ohms b. 75 OHms c. 100 Ohms d. 250 Ohms

a. 25 Ohms

Unlisted conductive and non-conductive optical cables shall be permitted to be installed in locations as described in 770.154, where the length of the cable between the buildings point of entrance, does not exceed ______ and the cable enters the outside and is terminated in the enclosure. a. 50 ft. b. 75 ft. c. 100 ft. d. 150 ft.

a. 50 ft. REF: [NEC] 770.48(A)

What is the most common connector type used on RG-59 cable for CCTV? a. BNC b. ST c. F-Type d. XLR

a. BNC

Only these types of cables shall be permitted to be installed in listed riser CATV raceways in vertical riser runs from floor to floor. a. CATVR, CATVP b. CATVR, CATVX c. CATVR, CATV d. CATVR, CMG, CM, CATVP

a. CATVR, CATVP REF: [NEC] 820.113(D)(1)

What are the permitted substitutions for a CL3R? a. CMP, CL3P, CMR b. CMP, CL3P, CL2P c. CMP, CL3P, CL2P, CMR, CL3R d. CL3R, CMG, CM, PLTC

a. CMP, CL3P, CMR REF: [NEC] 725.154(A)

What is a fusion splicer used for? a. Fiber splicing b. Copper Data splicing c. Coax splicing d. none of these

a. Fiber splicing

What are the tip colors for a 25 pair telephone cable? a. White, Red, Black, Yellow, Violet b. Blue, Orange, Green, Brown, Slate c. Blue, Red, Black, Slate, White d. White, Red, Yellow, Black, Violet

a. White, Red, Black, Yellow, Violet

The ________ portion of abandoned communications cables shall be removed. a. accessible b. viewable c. surface d. hidden

a. accessible REF: [NEC] 800.25

The communications primary protector shall not be located in any classified hazardous location or in the vicinity of this _______. a. easily ignitable material b. electrical equipment immersed in a protective oil c. an enclosure that is pressurized with a protective gas d. all of the above

a. easily ignitable material REF: [NEC] 800.90(C)

Class 1 Remote Control & Signaling Circuits power output of the source shall _________. a. not be required to be limited b. be required to be limited c. be limited to 1000 VA d. both A & C

a. not be required to be limited REF: [NEC] 725.41(B)

Unlisted CATV coaxial cable that enters a building from the outside shall ______. a. not exceed 50 ft. and be terminated at a grounding block b. not exceed 25 ft. and be terminated at a grounding block c. not exceed 50 ft. and be terminated at a junction box d. not exceed 100 ft. and be terminated at a junction box.

a. not exceed 50 ft. and be terminated at a grounding block REF: [NEC] 820.48

Access to electrical equipment ______________ be denied by an accumulation of optical fiber cables that _______ removal of panels including suspended ceiling panels. a. shall not, prevents b. shall not, impedes c. shall not, conveys d. none of the above

a. shall not, prevents REF: [NEC] 770.21

Communications conductors shall not be placed in any raceway with conductors of electric light, power, Class 1, non-power-limited fire alarm, or medium power broadband communications circuits unless _______. a. they are separated by a permanent barrier or listed dividers, b. they can never be ran together c. the voltage rating of the communications cable is equal or above the rating of the other circuits d. both a and c

a. they are separated by a permanent barrier or listed dividers, REF: [NEC] 800.133(A)(1)(d) Exception #1

Driven communication primary protector ground rods without an intersystem ground connection should be separated from electrodes of other systems by at least? a. 1.5 m (5 feet) b. 1.8 m (6 feet) c. 2.4 m (8 feet) d. 3 m (10 feet)

b. 1.8 m (6 feet) REF: [NEC] 800.100(B)(3)(2)

Where practical, a separation of how much distance shall be maintained between communications wires and cables on buildings and lightning conductors? a. 2.5 m (8 feet) b. 1.8 m (6 feet) c. 300 mm (12 inches) d. 1.0 m (40 inches)

b. 1.8 m (6 feet) REF: [NEC] 800.53

Direct buried CATV coaxial cables shall be separated by at least ______ inches from conductors of any light or power or Class 1 circuit. a. 6 b. 12 c. 24 d. 36

b. 12 REF: [NEC] 820.47(B)

Where there is no mobile home service equipment located within 30 feet of the exterior wall of the mobile home it serves, the communication primary protector ground shall be connected to a grounding conductor not smaller than ____. a. 6 AWG b. 12 AWG c. 18 AWG d. 20 AWG

b. 12 AWG REF: [NEC] 800.106(B)

What is the smallest size grounding conductor that can be used for a CATV system? a. 18 AWG b. 14 AWG c. 12 AWG d. 6 AWG

b. 14 AWG REF: [NEC] 820.100(A)(3)

What is the typical AWG size for a CAT 5 cable? a. 26-24 AWG b. 24-22 AWG c. 20-18 AWG d. 18-16 AWG

b. 24-22 AWG

One watt is equal to ______ BTU/hour. a. .3412 b. 3.412 c. 34.12 d. 1.312

b. 3.412

CATV coaxial cable lead-in conductors shall provide clearances of not less than _______ from electric light and power where the proximity to electric light and power cannot be avoided. a. 100 mm (4 in) b. 300 mm (12 in.) c. 1.2 m (40 in.) d. 2.5 m (8 ft.)

b. 300 mm (12 in.) REF: [NEC] 820.44(A)(4) Exception

The clearance of radio and television equipment lead in conductors outside of a receiving station where the circuit voltage is less than 150 volts shall not be less than _______. a. 2 inches b. 4 inches c. 2 feet d. 10 feet

b. 4 inches REF: [NEC] 810.18(A)

What is the minimum separation between radio and television equipment receiving station outdoor lead-in conductors and conductors of circuits not over 150 volts between conductors where the permanent separation of all conductors involved is ensured? a. 3 inches b. 4 inches c. 6 inches d. 8 inches

b. 4 inches REF: [NEC] 810.18(A)

What is the minimum voice cabling type for a residential application? a. 4-pair, category 2 b. 4-pair, category 3 c. 4-pair, category 5 d. 4-pair, station wire

b. 4-pair, category 3

What type of coaxial cable could be substituted for CATV cable? a. CMX b. CATVP c. FPLP d. all of the above.

b. CATVP REF: [NEC] 820.154(b)

The following cable types shall be allowed to be installed in a one and two family dwellings: a. CMP, CMG, CG b. CM, CMX c. CMP, CMR, CG d. CMP, CG

b. CM, CMX REF: [NEC] 800.154(a)

CL2 nomenclature stands for? a. Communication Level 2 b. Class 2 c. Conductive Load x2 d. none of the above

b. Class 2 REF: [NEC] 725.179

What is the 3dB rule? a. If the distance to the speakers is cut by half, the volume is increased by 3dB. b. If you double the wattage on the load you increase the volume by only 3dB. c. If you add a speaker you must increase the volume 3dB d. Increasing 3dB triples the power.

b. If you double the wattage on the load you increase the volume by only 3dB.

Optical Fiber Cable installed in hazardous (classified) locations should be type: a. OCAP b. OFCP c. OFPP d. OFCC

b. OFCP REF: [NEC] 770.154(b) and 770.3(A)

Which optical fiber cable(s) could be substituted for OFNR? a. OFN, OFNG b. OFNP c. OFNG d. OFCP

b. OFNP REF: [NEC] 770.179 and 770.154

Which group of optical fiber cable markings is not correct? a. OFNP, OFCP, OFNR b. OFNP, OFNX c. OFCG, OFC d. OFNP, OFNR

b. OFNP, OFNX REF: [NEC] 770.179

What is the best way to protect against voltage spikes in a DC circuit? a. add a capacitor across the contacts b. add a diode across the relay coil c. use an in-line fuse on the common wire of the contact d. use an isolation transformer

b. add a diode across the relay coil

10. Installation of equipment that is electrically connected to a communications network shall __________________________. a. also include temporary connection of testing equipment for maintenance or repair. b. be listed as being suitable for electrical connection to a communication network. c. be listed as being suitable for electrical connection to a communications network including temporary connection of testing equipment for maintenance orrepair. d. none of the above

b. be listed as being suitable for electrical connection to a communication network. REF: [NEC] 800.170, 800.18

CM cable shall be listed as _______. a. having fire-resistant characteristics capable of preventing the carrying of fire from floor to floor b. being resistant to the spread of fire c. having adequate fire resistant and low smoke producing characteristics d. being resistant to flame spread

b. being resistant to the spread of fire REF: [NEC] 800.179(D)

The "C" in optical fiber cabling marking means __________. a. compliance b. conductive c. composite d. copper

b. conductive REF: [NEC] 770.179

Communication wires and cables shall be separated by at least 2 inches from conductors of any electric light, power, Class 1, non-powered-limited fire alarm, or medium powered network-powered broadband communication circuits unless permanently separated by a continuous and firmly fixed nonconductor such as _______. a. porcelain tubes regardless of cable insulation b. flexible tubing , porcelain tubes, in addition to the insulation on the wire c. porcelain tubes, aluminum flexible raceway d. none of the above

b. flexible tubing , porcelain tubes, in addition to the insulation on the wire REF: [NEC] 800.133(A)(2) Exception #2

Access to electrical equipment shall not be denied by an accumlation of communications wires and cables that prevents removal of ________, including suspended ceiling panels. a. covers b. panels c. doors d. boxes

b. panels REF: [NEC] 800.21

Which of the following location conditions is a correct statement for a communications primary protector? a. primary protectors can be installed in a class 3, division 2 occupancy b. primary protectors shall not be located in any hazardous (classified) location c. primary protectors can be installed in a class 2, division 1 occupancy, but not in a class 1 division 1 or 2 occupancy d. primary protectors are allowed to be installed in any class 1, 2 or 3 occupancy when installed in a listed metal cabinet, connected to the building grounding electrode system.

b. primary protectors shall not be located in any hazardous (classified) location REF: [NEC] 800.90(C)

In installations where an optical fiber cable is exposed to contact with electric light or power conductors and the cable is terminated on the outside of the building, the non-current carrying members _______________ either grounded as specified in 770.100 or interrupted by an insulating joint or equivalent device. a. shall not b. shall be c. should d. should not

b. shall be REF: [NEC] 770.93(B)

A cable is required to have a minimum of how many conductors? a. one b. two c. three d. four

b. two REF: [NEC] 800.2

What type of cable tester is also called a pair scanner? a. OTDR b. wiremap tester c. OLTS d. receptacle tester

b. wiremap tester

Radio and television receiving equipment underground Lead-in conductors shall be separated by at least ______ from light and power conductors. a. 4 inches b. 2 feet c. 12 inches d. 6 feet

c. 12 inches REF: [NEC] 810.18(A)

The total voltage of two 12V batteries installed in parallel would be equal to? a. 12VAC b. 24VAC c. 12VDC d. 24VDC

c. 12VDC

46. What size outdoor antenna conductor shall be used for a receiving station, where at the maximum open span length is 150 feet, and the material is hard-drawn copper? a. 20 AWG b. 19 AWG c. 14 AWG d. 12 AWG

c. 14 AWG REF: [NEC] 810.16(A)

When grounding non-current carrying metallic members of optical fiber cables, the grounding conductor shall not be smaller than ________________AWG and shall not be required to exceed __________________AWG. a. 12, 6 b. 12, 14 c. 14, 6 d. 6, one aught

c. 14, 6 REF: [NEC] 770.100(A)(3)

What is the standard telecommunications rack width? a. 22 inches b. 24 inches c. 19 inches d. 16 inches

c. 19 inches

The communications primary protector grounding conductor in one and two family dwellings shall not exceed _____. a. 6 feet b. 15 feet c. 20 feet d. 9 meters

c. 20 feet REF: [NEC] 800.100(A)(4)

Radio and television equipment outdoor antennas and lead-in conductors, where proximity to open electric light or power service conductors of less than ______ between conductors cannot be avoided, the installations shall be such as to provide a clearance of at least ______. a. 300 volts, 4 feet b. 150 votls, 3 feet c. 250 volts, 2 feet d. 600 volts, 10 feet

c. 250 volts, 2 feet REF: [NEC] 810.13

Where serving a mobile home, the CATV coaxial cable shield ground should be connected to the metal frame of the mobile home or available grounding terminal of the mobile home where the service disconnecting means is located within how many feet of the exterior wall of the mobile home? a. 10 feet b. 20 feet c. 30 feet d. 40 feet

c. 30 feet REF: [NEC] 820.106(A)(1), 820.93

Communication wires and cables shall have a voltage rating of not less than ________. a. 100 Volts b. 300 Amps c. 300 Volts d. 600 Volts

c. 300 Volts REF: [NEC] 800.179

Communication wires and cables shall have a voltage rating of not less than 300 volts. The insulation for the individual conductors, other than the outer conductor of a coax cable, shall be rated for _______ minimum. a. 90 volts b. 120 volts c. 300 volts d. 600 volts

c. 300 volts REF: [NEC] 800.179

For communication circuits, secondary protectors need to be used with primary protectors when exposure to accidental contact with electric light and power conductors operating over _______ to ground a. 90 volts b. 120 volts c. 300 volts d. 600 volts

c. 300 volts REF: [NEC] 800.90(D) Information Note

Soft-drawn or medium-drawn copper shall be permitted for lead-in conductors,for radio and television receiving equipment, where the maximum span between points of support is less than _______. a. 4 feet b. 15 feet c. 35 feet d. 150 feet

c. 35 feet REF: [NEC] 810.11 Exception

In one-and two-family dwellings, the communications primary protector grounding conductor should be as short as practical, not to exceed: a. 1.2 m (4 feet) b. 2.3 m (8 feet) c. 6.0 m (20 feet) d. 15 m (50 feet)

c. 6.0 m (20 feet) REF: [NEC] 800.100(A)(4)

The following cable types are allowed to be installed in a listed plenum communications raceway installed in vertical riser runs in a shaft from floor to floor. a. CMP, CMR, CMG, CM b. CMP, CMG, CM, CMX c. CMP, CMR d. CMP, CM

c. CMP, CMR REF: [NEC] 800.154(A)

Which of the following types of fiber optic cable can be installed in ducts, plenums and other spaces used for environmental air? a. OFCG and OFC b. OFNG and OFN c. OFNP and OFCP d. OFNR ad OFCR

c. OFNP and OFCP REF: [NEC] 770.179 (a)

The voltage rating on CATV coaxial cables _______. a. shall not be marked on the cable b. voltage ratings shall be marked where the cable has multiple listings and is required for one of those listings c. a and b d. none of the above

c. a and b REF: [NEC] 820.179 Exception

When installing communications cables or wires, it is allowed to do the following: a. attach to exterior conduit or raceway for support as long as access to junction boxes, terminal cans, or raceway covers are not blocked b. attach to exterior conduit or raceway for support as long as attachment means is done by using a non-conductive strap c. attach to the exterior of a raceway-type mast intended for the attachment and support of such conductors for an overhead span d. attach to the support of sprinkler pipes as long as the cables or wires are not attached to the piping itself.

c. attach to the exterior of a raceway-type mast intended for the attachment and support of such conductors for an overhead span REF: [NEC] 800.133(B) Exception

What is the unit of measurement when measuring attenuation loss/gain in a coaxial system? a. Ohm b. Hz c. dB d. Watts

c. dB

The following are proper ways of grounding a radio and television equipment receiving station where the building of structure served has no intersystem bonding termination EXCEPT: a. grounding interior metal water piping within 5 feet from the point of entrance b. grounded interior metal water piping within 5 feet from the point of entrance, the building or structure grounding electrode system as covered in 250.50 or service equipment enclosure c. grounded interior metal water piping within 5 feet from the point of entrance, flexible power service raceway, or the power service accessible means external to the building as covered i 250.94. d. grounded interior metal water piping within 5 feet from the point of entrance, non-flexible metallic power service raceway, service equipment enclosure, or the building or structure grounding electrode system as covered in 250.50.

c. grounded interior metal water piping within 5 feet from the point of entrance, flexible power service raceway, or the power service accessible means external to the building as covered i 250.94. REF: [NEC] 810.21(F)(3)

CATV coaxial cables shall have a vertical clearance of not less than ______, where the roof has a slope of not less than 100 mm in 300 mm (4 in. in 12 in.). a. 450 mm (18 in.) b. 1.2 m (4 ft.) c. 2.5 m (8 ft.) d. 900 mm (3 ft.)

d. 900 mm (3 ft.) REF: [NEC] 820.44(B) Exception #3

Overhead CATV coaxial cables shall be permitted to be attached to the exterior of a raceway ______. a. coaxial cables shall not be strapped, taped, or attached by any means to the exterior of any conduit or raceway as a means of support b. where the coaxial cables are permanently separated from conductors of electric light and power c. if the raceway-type mast is intended for attachment and support of such cables d. all of the above

c. if the raceway-type mast is intended for attachment and support of such cables REF: [NEC] 820.133(B) Exception

48. For new construction, a minimum of one communications outlet shall be installed within the dwelling unit ____________. a. in the entry way b. in a common area c. in a readily accessible area d. near the service providers point of demarcation

c. in a readily accessible area REF: [NEC] 800.156

A ______ is used to measure optical power. a. dispersion meter b. light source c. power meter d. volt ohmmeter

c. power meter

If a building or structure served has no intersystem bonding termination for communication circuits, which of the following can not serve as a connection point for the grounding conductor? a. the service equipment enclosure b. the metallic power service raceway c. the steam or hot water pipe in contact with earth not less than 1.8 m (6 feet) d. the grounded interior metal water piping system within 1.5 m (5 feet) from its point of entrance to the building

c. the steam or hot water pipe in contact with earth not less than 1.8 m (6 feet) REF: [NEC] 250.52 and/or 800.100(B)(3)(2)

The communication primary protectors, at mobile home service equipment with a disconnecting means that is connected to an electrode by a grounding conductor, must be located within ________ of these exterior wall. a. 6 meters b. 9 feet c. 15 meters d. 30 feet

d. 30 feet REF: [NEC] 800.106(A)

Where there is no mobile home service equipment within _____, grounding shall comply with 800.100(B)(3). a. 5 feet b. 10 feet c. 15 feet d. 30 feet

d. 30 feet REF: [NEC] 800.106(A)(1)

A control circuit for a permanent amusement attraction should be supplied from a source that has a rated output of not more than: a. 24 volts and 15 amperes b. 30 volts and 20 amperes c. 24 volts and 1000 volt-amperes d. 30 volts and 1000 volts-amperes

d. 30 volts and 1000 volts-amperes REF: [NEC] 522.10(A)

Communications wires and cables without a metallic shield, running from the last outdoor support to the primary protector, shall be separated by _______ from electric light or power conductors not in a raceway or cable. a. 3 feet b. 4 feet c. 2 inches d. 4 inches

d. 4 inches REF: [NEC] 800.50 (B), 800.50 (A)

Unlisted, outside plant coaxial cable for community antenna television systems can be installed in cable trays where the cable enters from outside the building, measured from the point of entrance, does not exceed: a. 20 feet b. 30 feet c. 40 feet d. 50 feet

d. 50 feet REF: [NEC] 820.48

A bonding jumper connected between the radio and television receiving equipment and the power grounding electrode shall not be smaller than ______. a. 18 AWG b. 12 AWG c. 10 AWG d. 6 AWG

d. 6 AWG REF: [NEC] 810.21(J)

A bonding jumper not smaller than ______ copper or equivalent shall be connected between the CATV systems grounding electrode system at the building or structure served where separate electrodes are used. a. 12 AWG b. 10 AWG c. 8 AWG d. 6 AWG

d. 6 AWG REF: [NEC] 820.100(D)

Class 1 remote control and signaling circuits should not exceed how many volts? a. 24 volts b. 48 volts c. 120 volts d. 600 volts

d. 600 volts REF: [NEC] 725.41(B)

Which condition requires no separation between electric power and communications cable conductors? a. the communications cable jacket is rated for 300 volts b. power cables are introduced solely to power communications equipment c. communications cable conductors and electric power conductors are functionally associated d. communications cable conductors are separated from electric power by a firmly fixed nonconductive flexible tubing

d. communications cable conductors are separated from electric power by a firmly fixed nonconductive flexible tubing REF: [NEC] 800.133(A)(1)(d) Exception #2

When installed, a listed primary protector is applied on each community antenna and radio distribution cable external to the premises, but it shall not be located in an hazardous (classified) location or in the vicinity of what kind of materials? a. volatile b. combustible c. flammable d. easily ignitable

d. easily ignitable REF: [NEC] 820.93(D)

Installations where the communications cable enters a building or is terminating outside a building, the metallic sheath members of the cable need to be _______. a. grounded as specified by 250.22 or interrupted by a blocking diode b. grounded as specified by 250.22 or interrupted by an insulating joint c. grounded as specified by 800.100 or interrupted by a blocking diode d. grounded as specified by 800.100 or interrupted by an insulating joint

d. grounded as specified by 800.100 or interrupted by an insulating joint REF: [NEC] 800.93(A)&(B)

For communication circuits, if a building has no intersystem bonding termination but does have a grounding means, the grounding conductor shall be connected to the nearest accessible location on the following except _______. a. interior water system within 5 feet, metallic power service raceway, service equipment enclosure b. interior water system within 5 feet, metallic power service raceway, the power service accessible means external to enclosures as covered i 250.94 c. interior water system within 5 feet, metallic power service raceway, the grounding electrode conductor or the grounding electrode conductor metal enclosure d. interior water system within 5 feet, metallic power service raceway, service equipment enclosure, equipment enclosure door or cover

d. interior water system within 5 feet, metallic power service raceway, service equipment enclosure, equipment enclosure door or cover REF: [NEC] 800.100(B)(1-7)

Class 1, Class 2 and Class 3 circuits should be identified at terminal and junction boxes because? a. the wires will not be mistaken for abandoned cables b. it will assist the installer technician during installation c. it will eliminate the need for a color code of all conductors in the circuit d. it prevents unintentional interference with other circuits during testing and servicing

d. it prevents unintentional interference with other circuits during testing and servicing REF: [NEC] 725.30

When tagging abandoned communications cables for future use, what is the requirement of the tag? a. it should identify when the cable will be used b. it should be made of plastic and have a printed label. c. it should tell where the cable orginates and is terminated d. it should be durable enough to withstand the environment involved.

d. it should be durable enough to withstand the environment involved. REF: [NEC] 800.25

OFNP is _______________. a. nonconductive optical fiber general purpose cable b. optical fiber non-plenum cable c. optical fiber conductive plenum cable d. nonconductive optical fiber plenum cable.

d. nonconductive optical fiber plenum cable. REF: [NEC] 770.179

The cable voltage ratings on communications wires and cables ____________ be marked on the cable or on the under carpet communications wire. a. must b. must not c. shall d. shall not

d. shall not REF: [NEC] 800.179

Cable voltage ratings ______ on the cable or on the undercarpet communications wire: a. are allowed to be marked as long as the cable is also clearly marked as communications cable b. shall be marked c. shall be marked on the undercarpet wire only due to possible fire hazards d. shall not be marked

d. shall not be marked REF: [NEC] 800.179

For communication circuits, if a building or structure has no intersystem bonding termination or has no grounding means, the grounding conductor shall be connected to one of the following except for: a. interior metal water piping located within 5 feet from the point of entrance b. any one of the individual electrodes described in 250.52(A)(7) and (A)(8). c. a ground rod or pipe not less than 5 feet in length and 1/2 inch in diameter. d. steam or hot water pipe or terminal conductors.

d. steam or hot water pipe or terminal conductors. REF: [NEC] 800.100(B)(3)(2)