B&G chptr 2 prt 6, 7

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

Listed FMC can be used as the equipment grounding conductor if the length in any ground return path does not exceed 6 ft and the circuit conductors contained in the conduit are protected by overcurrent devices rated at _____ or less.

20A. 250.118(5)b and d

Electrical equipment permanently mounted on skids, and the skids themselves, shall be connected to the equipment grounding conductor sized as required by _____.

250.66. 250.112(K)

Which of the following appliances installed in residential occupancies need not be connected to an equipment grounding conductor?

A toaster. 250.114(3)a and b

Listed liquidtight flexible metal conduit (LFMC) is acceptable as an equipment grounding conductor when it terminates in listed fittings and is protected by an overcurrent device rated 60A or less for trade sizes 3/8 through 1/2.

False. 250.118(6)a and b

A wire-type equipment grounding conductor is permitted to be used as a grounding electrode conductor if it meets all of the requirements of Parts II, III, and VI of Article 250.

True. 250.121 Ex

Type MC cable provides an effective ground-fault current path and is recognized by the NEC as an equipment grounding conductor when _____.

a or b. 250.118(10)a and b

Conductors with the color _____ insulation shall not be used for ungrounded or grounded conductors.

a or b. 250.119

When a single equipment grounding conductor is used for multiple circuits in the same raceway, cable, or cable tray, the single equipment grounding conductor shall be sized according to the _____.

largest overcurrent device of the multiple circuits. 250.122(C)

The Code requires the installation of an equipment grounding conductor of the wire type in _____.

none of these. 250.118(2), (3), and (4)

Except as provided in 250.122(F)(2)(b) for raceway or cable tray installations, the equipment grounding conductor in each multiconductor cable shall be sized in accordance with 250.122 based on the _____.

overcurrent protective device for the feeder or branch circuit. 250.122(F)(2)

Equipment grounding conductors for feeder taps are not required to be larger than the tap conductors.

True. 250.122(G)

Exposed normally noncurrent-carrying metal parts of fixed equipment likely to become energized shall be connected to the equipment grounding conductor where located _____.

any of these. 250.110(1), (2), and (3)

An equipment grounding conductor shall be identified by _____.

any of these. 250.119

The terminal of a wiring device for the connection of the equipment grounding conductor shall be identified by a green-colored, _____.

any of these. 250.126(1), (2), and (3)

Listed FMC and LFMC shall contain an equipment grounding conductor if the raceway is installed for the reason of _____.

b or c. 250.118(5)e

Equipment grounding conductors for motor branch circuits shall be sized in accordance with Table 250.122, based on the rating of the _____ device.

branch-circuit short-circuit and ground-fault protective. 250.122(D)(1)

If multiconductor cables are installed in parallel in the same raceway, auxiliary gutter, or cable tray, _____ equipment grounding conductor(s) that is(are) sized in accordance with 250.122 shall be permitted in combination with the equipment grounding conductors provided within the multiconductor cables and shall all be connected together.

one. 250.122(F)(2)(b)

If circuit conductors are installed in parallel in the same raceway or cable tray, a single wire-type conductor shall be permitted as the equipment grounding conductor and sized in accordance with 250.122, based on the overcurrent protective device for the _____.

a or b. 250.122(F)(1)(a)

When ungrounded circuit conductors are increased in size to account for voltage drop, the wire-type equipment grounding conductor shall be proportionately increased in size according to the increase in size of the ungrounded conductors using their _____.

circular mil area. 250.122(B)


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