EEP 2 & UNEC 2 TEST

For attics and underfloor spaces, utility rooms, and basements in all occupancies, at least _____ lighting outlet(s) containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requiring servicing.

1

What's the resistance total of a 10-ohm, a 6-ohm, and a 3-ohm resistor connected in parallel?

1.67 ohms

What is the minimum size copper equipment bonding jumper for a 40A rated circuit?

10 AWG

Overhead service conductors shall have a minimum vertical clearance of _____ ft from final grade over residential property and driveways, as well as over commercial areas not subject to truck traffic where the voltage does not exceed 300 volts-to-ground.

12

For a separate building or structure supplied by a separately derived system when overcurrent protection is not provided for the supply conductors to the building/structure as permitted by 240.21(C)(4), the installation shall be _____ in accordance with 250.30(A).

Grounded and bonded

A service disconnecting means shall be installed at a(an) _____ location.

Readily accessible

Where a premises wiring system contains feeders supplied from more than one nominal voltage system, each ungrounded conductor of a feeder shall be identified by phase or line and system by _____, or other approved means.

any of these

Concrete-encased electrodes of ______ shall not be required to be part of the grounding electrode system where the steel reinforcing bars or rods aren't accessible for use without disturbing the concrete.

existing buildings or structures

Alternating-current circuits of less than 50V shall be grounded if supplied by a transformer whose supply system exceeds 150 volts-to-ground.

true

The minimum clearance for overhead service conductors not exceeding 600V that pass over commercial areas subject to truck traffic is _____ ft.

18

If a building or structure is supplied by a service or feeder with _____ or more disconnecting means in separate enclosures, the grounding electrode connections shall be made in accordance with 250.64(D)(1), 250.64(D)(2), or 250.64(D)(3).

2

The total resistance of five 14-ohm resistors in parallel is _____ ohms.

2.8

The size of the grounding electrode conductor for a building or structure supplied by a feeder shall not be smaller than that identified in _____, based on the largest ungrounded supply conductor.

250.66

The vertical clearance of final spans of overhead service conductors above, or within _____ ft measured horizontally of platforms, projections, or surfaces that will permit personal contact shall be maintained in accordance with 230.24(B).

3

The resistance of a coffee pot is 10 ohms and the resistance of a toaster oven is approximately 6 ohms. What's the total resistance of the two appliances if they're connected in parallel?

3.75 ohms

Where rock bottom is encountered at an angle up to 45 degrees when driving a rod or pipe electrode, the electrode shall be permitted to be buried in a trench _____ deep.

30in

At the time of installation, grounded conductors _____ AWG or larger can be identified by distinctive white or gray markings at their terminations.

4

The total rating of utilization equipment fastened in place, other than luminaires, shall not exceed _____ percent of a multiple outlet branch circuit rating.

50

In other than dwelling units, GFCI protection shall be provided for all 15A and 20A, 125V, single-phase receptacles installed within _____ ft from the top inside edge of the bowl of a sink.

6

Each feeder disconnect rated 1,000A or more and installed on solidly grounded wye electrical systems of more than 150V to ground, but not exceeding _____ phase-to-phase, shall be provided with ground-fault protection of equipment in accordance with 230.95.

600V

What's the voltage drop of 180 ft of 12 AWG wire (0.347 ohms) supplying a 17A load?

6V

A 12-ohm coffee pot is connected in parallel to a 16.09-ohm skillet and wired with a wire having a resistance of 0.07 ohms. What's the total resistance of the loads and the wires of this series-parallel circuit?

7.04 ohms

Outside feeder tap conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the tap conductors _____.

All of these

Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all _____ conductors at the point where the branch circuit originates.

Ungrounded

Underground service conductors shall have _____.

adequate mechanical strength and sufficient ampacity for the loads calculated

The grounded conductor of each separately derived system shall be bonded to the nearest available point of the metal water piping system(s) in the area served by each separately derived system and each bonding jumper shall be sized in accordance with Table 250.102(C)(1) based on the largest ungrounded conductor of the separately derived system.

true

The grounding of electrical systems, circuit conductors, surge arresters, surge-protective devices, and conductive normally noncurrent-carrying metal parts of equipment shall be installed and arranged in a manner that will prevent objectionable current.

true

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

when it contains an insulated or uninsulated equipment grounding conductor in compliance with 250.118(1)

120V, single-phase, 15A and 20A branch circuits supplying outlets and devices installed in _____ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).

guest rooms

At least one lighting outlet controlled by a listed wall-mounted control device shall be installed in every habitable room, kitchen, and bathroom of a dwelling unit.

true