Homework Answers
The ampacity of a conductpc is the allowable ampacity multiplied by the derating factor
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The ampacity of a conductor is the allowable ampacity multiplied by the factor. a. grounding b....
A) select the appropriate overcurrent protection device size, B) conductor size(s) (including equipment grounding conductor), C)...
A) select the appropriate overcurrent protection device
size,
B) conductor size(s) (including equipment grounding
conductor),
C) conduit size(s)
D) Draw a schematic representation of the circuit (conduit and
tick marks)
Please dont skip steps and label which tables you used!
thanks
240V-іф branch circuit to an electric range with a continuous load of 8700 VA. Copper conductors, TW insulation, and ENT conduit. Use Chapter 9, Tables 4 and 5 for sizing the conduit. 4,
10. What is the conductor ampacity required for a 20 KW, 240 volt central space heater?...
10. What is the conductor ampacity required for a 20 KW, 240 volt central space heater? 11. What is the ampacity of three No. 4 THWN conductors installed in an ambient temperature of 30 degree Celsius? 12. What is the ampacity of three No. 3/0 conductors installed in free-air? 13. What is the ampacity of eight 4/O THHN conductors installed a raceway in an ambient temperature of 100 degreee F? 14. What is the ampacity of ten No. 6 THWN...
Please complete both, very confused 14. A device that establishes an electrical connection to the earth...
Please complete both, very confused
14. A device that establishes an electrical connection to the earth is a a grounding conductor C. grounding electrode b. equipment grounding conductor d.grounding electrode conductor 15. The size of an equipment grounding conductor is based on the size of in circuit. a. overcurrent protection device C. conduit b. one phase d. neutral
1. The color of the outer finish of the insulation or tape marking a grounded conductor...
1. The color of the outer finish of the insulation or tape marking a grounded conductor must be A. black B. green. C. white or gray D. yellow finish. 2. When the main bonding jumper in a residential el ectrical system is a screw only, the screw must be identified with a A. white B. red C. green D. black The grounding electrode conductor should be installed without a splice, unless the splice is made using exothermic welding or by...
(12 If a conductor is covered, it is: A) Encased with an insulation recognized by the Code 8) Encased with an outer...
(12 If a conductor is covered, it is: A) Encased with an insulation recognized by the Code 8) Encased with an outer covering not recognized as electrical insulation C) Effectively isolated from ground faults D) Covered with a material of a composition and thickness recognized by UL (13 Open motors with commutators shall material, but this: A) Is only required for over 600 volts B) Does not prohibit these motors from a Class I location C) Shall not prohibit these...
If the current in an inductor is doubled, by what factor is the stored energy multiplied?...
If the current in an inductor is doubled, by what factor is the stored energy multiplied? a.1 b.1/2 c.1/4 d.2 e.4
At a construction site, all cord sets and receptacles not part of the permanent wiring shall be tested for continuity and proper connection of the grounding conductor and plugs and written record of t...
At a construction site, all cord sets and receptacles not part of the permanent wiring shall be tested for continuity and proper connection of the grounding conductor and plugs and written record of the tests provided to the authority having jurisdiction: (a) Before first use on the construction site. (b) When there is evidence of damage. (c) Before equipment is returned to service after repairs. (d) At intervals not exceeding 3 months. (e) All of the above (f) There is...
13. Type SE-R Service-Entrance Cable with three insulated conductors and a bare equipment grounding conductor conta...
13. Type SE-R Service-Entrance Cable with three insulated conductors and a bare equipment grounding conductor contained within the outer nonmetallic sheath is used as a feeder to provide power from the service panel to a panelboard located in another part of the building as shown in Figure 1.44. The cable run along the flat surface of structural materials is required to be supported at intervals not to exceed: A 6 ft (1.8m). B. 41/2ft(1.4m). C 3 ft (900 mm) D....
18. Current-carrying capacity is also known as A. voltage. B. power-handling rating. C. gauge. D. ampacity.
18. Current-carrying capacity is also known as A. voltage. B. power-handling rating. C. gauge. D. ampacity.
O AWG copper conductor without any markings to indicate the The terminal for dh s terminal is assumed to have a min...
O AWG copper conductor without any markings to indicate the The terminal for dh s terminal is assumed to have a minimum terminal temperature rating E. 90°C. 60°C. of: C, D. 75 C. B. 40-С. Code reference re rated branch-circuit supplies fluorescent luminaires (lighting fixtures) with a peres. All terminations are 75°C rated, there are only three current- THHW as shown in Figure 1.43 pe 10. A 20-am carrying conductors in EMT, and the conductor insulation is The minimum size...
A) select the appropriate overcurrent protection device
size,
B) conductor size(s) (including equipment grounding
conductor),
C) conduit size(s)
D) Draw a schematic representation of the circuit (conduit and
tick marks)
Please dont skip steps and label which tables you used!
thanks
240V-іф branch circuit to an electric range with a continuous load of 8700 VA. Copper conductors, TW insulation, and ENT conduit. Use Chapter 9, Tables 4 and 5 for sizing the conduit. 4,
10. What is the conductor ampacity required for a 20 KW, 240 volt central space heater? 11. What is the ampacity of three No. 4 THWN conductors installed in an ambient temperature of 30 degree Celsius? 12. What is the ampacity of three No. 3/0 conductors installed in free-air? 13. What is the ampacity of eight 4/O THHN conductors installed a raceway in an ambient temperature of 100 degreee F? 14. What is the ampacity of ten No. 6 THWN...
Please complete both, very confused
14. A device that establishes an electrical connection to the earth is a a grounding conductor C. grounding electrode b. equipment grounding conductor d.grounding electrode conductor 15. The size of an equipment grounding conductor is based on the size of in circuit. a. overcurrent protection device C. conduit b. one phase d. neutral
1. The color of the outer finish of the insulation or tape marking a grounded conductor must be A. black B. green. C. white or gray D. yellow finish. 2. When the main bonding jumper in a residential el ectrical system is a screw only, the screw must be identified with a A. white B. red C. green D. black The grounding electrode conductor should be installed without a splice, unless the splice is made using exothermic welding or by...
(12 If a conductor is covered, it is: A) Encased with an insulation recognized by the Code 8) Encased with an outer covering not recognized as electrical insulation C) Effectively isolated from ground faults D) Covered with a material of a composition and thickness recognized by UL (13 Open motors with commutators shall material, but this: A) Is only required for over 600 volts B) Does not prohibit these motors from a Class I location C) Shall not prohibit these...
13. Type SE-R Service-Entrance Cable with three insulated conductors and a bare equipment grounding conductor contained within the outer nonmetallic sheath is used as a feeder to provide power from the service panel to a panelboard located in another part of the building as shown in Figure 1.44. The cable run along the flat surface of structural materials is required to be supported at intervals not to exceed: A 6 ft (1.8m). B. 41/2ft(1.4m). C 3 ft (900 mm) D....
18. Current-carrying capacity is also known as A. voltage. B. power-handling rating. C. gauge. D. ampacity.
O AWG copper conductor without any markings to indicate the The terminal for dh s terminal is assumed to have a minimum terminal temperature rating E. 90°C. 60°C. of: C, D. 75 C. B. 40-С. Code reference re rated branch-circuit supplies fluorescent luminaires (lighting fixtures) with a peres. All terminations are 75°C rated, there are only three current- THHW as shown in Figure 1.43 pe 10. A 20-am carrying conductors in EMT, and the conductor insulation is The minimum size...
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