grounding and bonding

Which specific NEC section provides alternatives for stopping objectional current

B 250.6(b)

Table? Must generally be used for sizing the bonding jumper or conductors used to together to form a grounding electrode system

B 250.66

Which of the following conductors is not permitted to be identified using the color green or green with one or more yellow stripes

B grounded or ungrounded conductors

Which of the following is not permitted as identification means for grounded conductors installed at services?

B the color green

Branch circuit serving patient care spaces are required to be provided with a minimum of how many equipment grounding conductors

B two

If you're isolated grabbing receptacle is installed on a 30 amp branch circuit what is the minimum size required for the isolated insulated copper equipment grounding conductor

C 10 AWG

A single rod pipe or plate electrode must have a resistance to ground of not less than

C 25 ohms

Grounding electrodes in the grounding electrode system are covered in? Of article 250

C part III

The grounding electrode system and grounding electro conductor requirements for systems over 1000 votes are covered in which part of article to 250

C part III

The requirements for identification of equipment grounding conductors are provided in which NEC section

D 250.119

The service ground and neutral conductor of a single phase 3 wire system performance which of the following functions

D all of the above

The main bonding jumper in listed service equipment is required to be made of which of the following materials

D any of the above

? Current resulting from accidental conditions such as ground faults she'll not be classifies as object able current for the purposes specified in 250.6 A and b

D temporary

The supply conductors and grounding conductors for a surge protector device or not permitted to be smaller than? AWG copper

a 14

Table? Of the NEC Oracle 250 requires the largest ungrounded service entrance conductor to be used as the basis for determining the middle of sizes required for grounding electric conductors

a 250.68

The code requires a grounding electrode conductor connection to the load end of the overhead service conductors or service drop or to the ungrounded service conductors or the lateral up to the service equipment enclosure in the connection must be?

a accessible

I'll literally conductive material such as middle piping systems and in turn connected structural metal building frames that are likely to become energized shall be connected together and to the? In a manner that establishes ineffective ground fault current path

a electrical supply sourced

In a simple DC circuit if the voltage is 480 in the resistance is 20 ohms how much current would be present in the circuit

b 24a

Which NEC rule address is what is intended to be accomplished by grounding requirements for a grounded system

b 250.4(a)(1)

All but which of the following conductors are connected together with the service equipment for his service supplied by ungrounded

b grounded conductor

The total opposition to current in an AC circuit is known as the? Of the circuit

b impedance

A nonferrous metal enclosure for a grounding electrode conductor is required to be bonded to the grounding electrode conductor at? Where the ferrous metal enclosure is not physically continuous from a cabinet or equipment to the grounding electrode

b neither end

What NEC table is required to be used for sizing the water piping system bonding conductor/jumper

b table 250.102(c)(1)

Where a service is supplied by a corner grounded delta system the minimum size required for the grounding conductor shall not be less than

d the ungrounded service conductors

What is the maximum size grounding electrode required when the connection to earth is a sole connection through only Ground Road type electrodes

A 6awg copper

Which of the following is the grounded electrical circuit but it's not an affective path for ground fault current

A earth

The conductive paths installed to connect normally noncurrent caring metal parts of equipment together into the system grounded conductor or to the grounding electrode conductor or both defines which of the following

A equipment grounding conductor

A system or circuit conductor that is intentionally grounded defines which of the following

A grounded conductor

Grounding electrode conductors are generally required to be installed in a continuous length without splices other than which of the following?

d any of the above

How are isolated grounding type receptacle is required to be identified

d the receptacle must have an orange triangle on the face of the receptacle

Where is the largest service entrance conductor is 300 KCMIL ( six paralleled 500 KCMIL copper conductor) what is a minimal size required for a copper wire type main bonding jumper

c 400 lcmil copper

Grounded conductors at service equipment are required to be identified using any of the following except?

c Green with a white stripe

Objectional current is often the result of connections between? And ground or ground in metal parts on the load side of the service grounding point or the grounding point for a separately derived system

c grounded usually the neutral conductor

Without a connection to ground there is no

c grounding

Which of the following is not a component of the grounding and bonding scheme for a separately derived system

c main bonding jumper

What is the minimum size grounding conductor required for a service if the ungrounded service entrance conductors are solid at 500 kcmil copper in the ground conductor carries no load

d 1/0 awg copper

Where are the grounding electrode for a building is a metal ungrounded water pipe electrode what is the minimum size copper grounding electrode conductor tap that is extended from a common grounding electric conductor to a service disconnect that is supplied by 250 KCMIL copper service entrance conductors

d 2 awg

Which NEC table is used for determining the minimum size for wire type equipment grounding conductors

d 250.122

The grounding electrode conductor connects which of the following to the Earth

d all of the above

Where an isolated grounding circuit and receptacle is installed in accordance with the provisions of 250.146D the insulated/isolated equipment grounding conductor shall also be permitted to pass through which of the following without being connected to search in closers

d all of the above