C -10 ROUGH WIRING

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Direct burial of cable or conductors requires a depth of ____ inches if installed under streets, highways, roads alleys driveways, or parking lots.

12 inches

18 inches

24 inches (correct)

48 inches

Which of the following is a thick-walled rigid raceway?

EMT

RMC (correct)

FMC

PVC

Which of the following is an approved means for disconnecting the grounded conductor from the building's wiring?

A terminal with pressure connectors (correct)

A set of wire cutters at the entrance of the building

A cable bus

All of the above

What happens to current in a parallel circuit?

Adds up Signup and view all the answers

Which of the following does not belong in a residential panel box?

None of the above Signup and view all the answers

Lead-in conductors from an antenna to a building should not be crossed with power conductors, however, if the power conductor is 250 volts or less what is the minimum clearance allowed?

24 inches Signup and view all the answers

Which of the following is a cause for wavy and buckled photovoltaic raceways?

Thermal expansion Signup and view all the answers

What consideration(s) must an electrician take when installing photovoltaic raceways?

All of the above Signup and view all the answers

How would you wire a circuit to get voltage to add up to the desired value?

Series Signup and view all the answers

Which of the following is not considered to be a raceway?

Auxiliary gutters Signup and view all the answers

Mobile home service equipment shall be located adjacent to the mobile home and shall be located in sight no more than ___ feet from the exterior wall of the mobile home it serves.

30 Signup and view all the answers

How many receptacles are required in a residential garage?

1 Signup and view all the answers

Which of the following allows for the use of an ungrounded battery system?

Photovoltaic DC circuits Signup and view all the answers

In a simple series circuit, current:

Remains the same Signup and view all the answers

Which of the following can be used as an acceptable grounding electrode?

All of the above Signup and view all the answers

Which of the following is the largest conductor size?

0000 Signup and view all the answers

What is another term for a concrete-encased electrode?

Ufer ground Signup and view all the answers

What is a mechanically integrated assembly of modules or panels with a support structure and foundation, tracker, and other components that create a direct-current power-producing unit?

Array Signup and view all the answers

A module is a complete, environmentally protected unit consisting of solar cells, optics and other components, exclusive of tracker, designated to generate:

DC power Signup and view all the answers

A grounding electrode must be in contact with soil a minimum:

8 feet Signup and view all the answers

How many GFCIs are required in a residential bathroom?

1 Signup and view all the answers

The neutral conductor is connected to the neutral point of a system and is intended to carry current under normal conditions. In the code, the neutral is often referred to as the:

Grounded conductor because it is intentionally grounded Signup and view all the answers

A raceway that is 24 inches or less in length can be filled to _____ of its total cross-sectional area.

60% Signup and view all the answers

What is the maximum cross-sectional area allowed for two or more conductors or cables in tubing or conduit?

40% Signup and view all the answers

A power meter must be a minimum of ____ feet away from any door, gas meter, or window opening.

3 Signup and view all the answers

Which of the following grounding electrodes must be bonded together?

All of the above Signup and view all the answers

What do you call a conductor installed on the supply side of a service or within a service enclosure, that ensures the required electrical connectivity between metal parts?

Bonding jumper Signup and view all the answers

A 20-amp receptacle can have a maximum cord and plug load of:

16 amps Signup and view all the answers

If an overhead service conductor is less than 600v, what is the minimum height that conductor can be over public roads, alleys, and parking areas subject to traffic?

18 ft Signup and view all the answers

Conductors entering buildings shall be protected:

To the point of entrance Signup and view all the answers

What is the minimum distance that grounding electrodes should be spaced?

6 feet Signup and view all the answers

The power meter should be within ____ feet of the front corner of a residence.

10 Signup and view all the answers

A standalone solar PV system should be able to supply:

120V single-phase, 3-wire, 120/240-volt service Signup and view all the answers

If you have a 250' straight wire pull and a pull box with 4" conduit going in and out, what is the minimum length pull box you must use?

32 inches Signup and view all the answers

How would a contractor protect conductors from abrasion during installation?

Ensure raceways are mechanically complete Signup and view all the answers

Receptacles must have their grounding conductor contacts connected to:

The green grounding wire Signup and view all the answers

When are you required to guard or install PV source or output circuits?

Greater than 30 volts Signup and view all the answers

Underground cables and conductors under buildings shall be in:

A raceway Signup and view all the answers

What is the minimum length of a concrete-encased grounding electrode?

20 feet Signup and view all the answers

The utility company feeds a residential structure a ______ service.

240V Signup and view all the answers

Which of the following is a photovoltaic array that has two outputs, each having opposite polarity to a common reference point or center point?

Bipolar photovoltaic array Signup and view all the answers

If a feeder supplies continuous and non-continuous loads, the minimum feeder conductor size shall have an allowable ampacity no less than the non-continuous load plus ______ of the continuous load.

125% Signup and view all the answers

What is the minimum depth a cable or conductor can be directly buried under a 4" thick slab of concrete?

18 inches Signup and view all the answers

At what voltage are you required to provide guarding of live parts?

50 volts Signup and view all the answers

Which of the following locations should an electrician install a 20-amp laundry circuit?

Dwelling unit Signup and view all the answers

Which of the following is a thin-walled raceway?

EMT Signup and view all the answers

What is the maximum disconnect height?

6'7" Signup and view all the answers

When sizing an Uninterrupted Power Supply (UPS) battery, which component will generate the proper amount of electricity withdrawal?

Load bank Signup and view all the answers

Which of the following conductors are used for service drops?

Copper and aluminum Signup and view all the answers

If an overhead service conductor is 150V or less, what is the minimum height that runs above grade but in areas that are only accessible to pedestrian traffic?

10 ft Signup and view all the answers

What do you consider two or more electrodes that are bonded together?

A single grounding electrode system Signup and view all the answers

Which device is installed in the photovoltaic source circuit or PV output circuit that can provide an output DC voltage and current higher or lower value than the input DC voltage and current?

DC to DC converter Signup and view all the answers

If the minimum size of an underground service conductor is 8 AWG for copper, what is the minimum underground service conductor size for aluminum?

6 AWG Signup and view all the answers

What is another term for an inverter?

Power Conditioning Unit Signup and view all the answers

If a service conductor is over 300V but less than 600V, what is the minimum clearance of that service conductor if it runs in residential and commercial areas that are not subject to traffic?

15 ft Signup and view all the answers

Most residential homes require a minimum _____ main to handle all electrical needs.

100A Signup and view all the answers

Which of the following defines a unit that contains buses, automatic overcurrent devices, switches, and is designed to be placed against a wall, partition, or other support?

Panelboard Signup and view all the answers

What is the smallest grounding electrode conductor for an electric service over 1100 kcmil copper conductors?

3/0 copper Signup and view all the answers

A rod-type grounding electrode should have a diameter of ____ unless listed.

5/8 in. Signup and view all the answers

Which of the following is the smallest conductor?

AWG 24 Signup and view all the answers

All ungrounded photovoltaic DC conductors require disconnecting means that are readily accessible. If this is true, then where can you not install a PV disconnecting means?

Bathrooms Signup and view all the answers

What type of circuits or wiring cannot be in the same raceway?

PV source circuits and PV output circuits Signup and view all the answers

What is the maximum distance a service conductor can run over a roof to a service mast?

6 feet Signup and view all the answers

Which of the following is not an acceptable grounding electrode?

Metal underground gas piping or aluminum electrodes Signup and view all the answers

Which of the following is NOT a name for flexible conduit?

RRT Signup and view all the answers

A 15-amp receptacle can have a maximum cord and plug load of:

12 amps Signup and view all the answers

What is the primary purpose of a main lug load center?

As a distribution panel Signup and view all the answers

In the main panel, how many slots will a standard 120-volt breaker require?

1 Signup and view all the answers

When running RMC or IMC through a concrete slab (4-in thick), what is the minimum depth required?

4 inches Signup and view all the answers

Which of the following must be identified at all point of termination, connections and splices?

All of the above Signup and view all the answers

How do you ground a transformer 480v on the primary and 120/208 secondary?

Neutral and ground to be connected at the same point within the transformer Signup and view all the answers

If a conductor is 1000V or less, what is the minimum height of a service conductor that runs above a roof?

8 ft Signup and view all the answers

Which of the following has to be located within 10 feet of the meter?

Main breaker panel Signup and view all the answers

Which of the following conduit raceways are used in commercial or industrial applications due to its resistance against mechanical damage?

GRC Signup and view all the answers

Cooking appliances that are fastened in place, such as a stove, should be supplied by a:

40- and 50-amp branch circuit Signup and view all the answers

Which of the following materials are not allowed to be used for grounding electrodes?

Aluminum Signup and view all the answers

In the main panel, how many slots will a standard 240-volt breaker require?

2 Signup and view all the answers

A 30-amp receptacle can have a maximum cord and plug load of:

24 amps Signup and view all the answers

What kind of branch circuit should be able to supply lighting units or other energy utilization equipment?

15- and 20-amp branch circuit Signup and view all the answers

When installing photovoltaic source circuits, the maximum current shall be the sum of parallel module-rated short-circuit currents multiplied by:

125% Signup and view all the answers

A circuit over 150V to ground containing fuses must have a means of disconnecting at:

The supply side of all fuses Signup and view all the answers

Which of the following is NOT a permitted method for grounding and its connections?

Soldered connections Signup and view all the answers

What is the minimum size copper equipment grounding conductor for a 1600 ampere overcurrent device?

4/0 Signup and view all the answers

What is the maximum number of switches or circuit breakers allowed to disconnect and isolate the service from all other equipment?

6 Signup and view all the answers

When placed within an enclosed space or building, how should DC wiring be installed?

In metallic conduit or raceways Signup and view all the answers

What is the smallest size overhead service conductor allowed by the Electrical Code?

No. 8 AWG copper Signup and view all the answers

C -10 ROUGH WIRING

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Questions and Answers

Direct burial of cable or conductors requires a depth of ____ inches if installed under streets, highways, roads alleys driveways, or parking lots.

Which of the following is a thick-walled rigid raceway?

Which of the following is an approved means for disconnecting the grounded conductor from the building's wiring?

What happens to current in a parallel circuit?

Which of the following does not belong in a residential panel box?

Lead-in conductors from an antenna to a building should not be crossed with power conductors, however, if the power conductor is 250 volts or less what is the minimum clearance allowed?

Which of the following is a cause for wavy and buckled photovoltaic raceways?

What consideration(s) must an electrician take when installing photovoltaic raceways?

How would you wire a circuit to get voltage to add up to the desired value?

Which of the following is not considered to be a raceway?

Mobile home service equipment shall be located adjacent to the mobile home and shall be located in sight no more than ___ feet from the exterior wall of the mobile home it serves.

How many receptacles are required in a residential garage?

Which of the following allows for the use of an ungrounded battery system?

In a simple series circuit, current:

Which of the following can be used as an acceptable grounding electrode?

Which of the following is the largest conductor size?

What is another term for a concrete-encased electrode?

What is a mechanically integrated assembly of modules or panels with a support structure and foundation, tracker, and other components that create a direct-current power-producing unit?

A module is a complete, environmentally protected unit consisting of solar cells, optics and other components, exclusive of tracker, designated to generate:

A grounding electrode must be in contact with soil a minimum:

How many GFCIs are required in a residential bathroom?

The neutral conductor is connected to the neutral point of a system and is intended to carry current under normal conditions. In the code, the neutral is often referred to as the:

A raceway that is 24 inches or less in length can be filled to _____ of its total cross-sectional area.

What is the maximum cross-sectional area allowed for two or more conductors or cables in tubing or conduit?

A power meter must be a minimum of ____ feet away from any door, gas meter, or window opening.

Which of the following grounding electrodes must be bonded together?

What do you call a conductor installed on the supply side of a service or within a service enclosure, that ensures the required electrical connectivity between metal parts?

A 20-amp receptacle can have a maximum cord and plug load of:

If an overhead service conductor is less than 600v, what is the minimum height that conductor can be over public roads, alleys, and parking areas subject to traffic?

Conductors entering buildings shall be protected:

What is the minimum distance that grounding electrodes should be spaced?

The power meter should be within ____ feet of the front corner of a residence.

A standalone solar PV system should be able to supply:

If you have a 250' straight wire pull and a pull box with 4" conduit going in and out, what is the minimum length pull box you must use?

How would a contractor protect conductors from abrasion during installation?

Receptacles must have their grounding conductor contacts connected to:

When are you required to guard or install PV source or output circuits?

Underground cables and conductors under buildings shall be in:

What is the minimum length of a concrete-encased grounding electrode?

The utility company feeds a residential structure a ______ service.

Which of the following is a photovoltaic array that has two outputs, each having opposite polarity to a common reference point or center point?

If a feeder supplies continuous and non-continuous loads, the minimum feeder conductor size shall have an allowable ampacity no less than the non-continuous load plus ______ of the continuous load.

What is the minimum depth a cable or conductor can be directly buried under a 4" thick slab of concrete?

At what voltage are you required to provide guarding of live parts?

Which of the following locations should an electrician install a 20-amp laundry circuit?

Which of the following is a thin-walled raceway?

What is the maximum disconnect height?

When sizing an Uninterrupted Power Supply (UPS) battery, which component will generate the proper amount of electricity withdrawal?

Which of the following conductors are used for service drops?

If an overhead service conductor is 150V or less, what is the minimum height that runs above grade but in areas that are only accessible to pedestrian traffic?

What do you consider two or more electrodes that are bonded together?

Which device is installed in the photovoltaic source circuit or PV output circuit that can provide an output DC voltage and current higher or lower value than the input DC voltage and current?

If the minimum size of an underground service conductor is 8 AWG for copper, what is the minimum underground service conductor size for aluminum?

What is another term for an inverter?

If a service conductor is over 300V but less than 600V, what is the minimum clearance of that service conductor if it runs in residential and commercial areas that are not subject to traffic?

Most residential homes require a minimum _____ main to handle all electrical needs.

Which of the following defines a unit that contains buses, automatic overcurrent devices, switches, and is designed to be placed against a wall, partition, or other support?

What is the smallest grounding electrode conductor for an electric service over 1100 kcmil copper conductors?

A rod-type grounding electrode should have a diameter of ____ unless listed.

Which of the following is the smallest conductor?

All ungrounded photovoltaic DC conductors require disconnecting means that are readily accessible. If this is true, then where can you not install a PV disconnecting means?

What type of circuits or wiring cannot be in the same raceway?

What is the maximum distance a service conductor can run over a roof to a service mast?

Which of the following is not an acceptable grounding electrode?

Which of the following is NOT a name for flexible conduit?

A 15-amp receptacle can have a maximum cord and plug load of:

What is the primary purpose of a main lug load center?

In the main panel, how many slots will a standard 120-volt breaker require?

When running RMC or IMC through a concrete slab (4-in thick), what is the minimum depth required?

Which of the following must be identified at all point of termination, connections and splices?

How do you ground a transformer 480v on the primary and 120/208 secondary?

If a conductor is 1000V or less, what is the minimum height of a service conductor that runs above a roof?

Which of the following has to be located within 10 feet of the meter?

Which of the following conduit raceways are used in commercial or industrial applications due to its resistance against mechanical damage?

Cooking appliances that are fastened in place, such as a stove, should be supplied by a:

Which of the following materials are not allowed to be used for grounding electrodes?

In the main panel, how many slots will a standard 240-volt breaker require?