Branch Circuits
What's the minimum number of 20 amp circuits required for a dwelling unit
4
210.11 (C) (1) (2) (3)
The ground ring shall be installed not less than _____ below the surface of the earth.
30 inches
250.53 (F)
Type MC cable shall be supported at intervals not exceeding _____ unless otherwise permitted.
6' feet
330.30 (C)
In category 2 spaces each patient bed location in health care facilities shall be provided with a minimum of ___ receptacles.
Eight
517.18 (B) (1)
The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
Branch Circuit
Article 100
Grounding electrode conductors smaller than ____ shall be protected in RMC, IMC, Schedule 80 PVC, RTRC-XW, EMT, or cable armor.
6 AWG
250.64 (B) (3)
A #8 AWG takes up how much free space inside a box? (volume)
3.00 Cubic inches
314.16 (B) (1)
Portable structures shall not be located under or within a space that is located ____ horizontally and extending vertically to grade of conductors operating in excess of 600 volts.
15' feet
525.5 (B) (2)
The rating of any one cord-and-plug connected utilization equipment not fastened in place shall not exceed ____ of the branch circuit ampere rating.
80 percent
210.23 (B) (1)
A service with a size 3/0 copper ungrounded conductor requires a size _____ aluminum grounding electrode conductor
1/0 Aluminum
Table 250.66
Where the opening to an outlet, junction, or switch point is less than 8" inches in any dimension, each conductor shall be long enough to extend at least ____ outside the opening.
3" inches
300.14
Pool-associated motors shall be permitted to employ cord-and-plug connections. The flexible cord shall not exceed ____ in length.
3' feet
680.21 (A) (2)
A ____ amp branch circuit shall be permitted to supply one or more of the following: lighting outlets, dwelling unit exhaust fans on bathroom or laundry room lighting circuits, or a gas fireplace unit supplied by an individual branch circuit.
10 amp
210.23 (A)
If a single rod, pipe, or plate grounding electrode has a resistance to earth of _____ or less, the supplemental electrode shall not be required.
25 ohms
250.53 (A) (2) Exception
At every outlet used exclusively for lighting, the box shall be designed or installed so that the luminaire or lampholder can be attached. Boxes shall be required to support a luminaire weighing a minimum of ____.
50 lbs.
314.27 (A) (2)
24 AWG
620.12 (A) (2)
In dwelling units and motels, the voltage shall not exceed ______ volts nominal between conductors that supply the terminals of cord and plug connected loads 1440 VA nominal or less, or less than 1/4 hp.
120 volts
210.6 (A)
The voltage developed between the portable or mobile equipment frame and ground by the flow of maximum ground-fault current shall not exceed ___.
100 volts
250.188 (C)
The minimum size of conductors for voltage ratings up to and including _____ shall be 14 AWG copper or 12 AWG aluminum or copper-clad aluminum, except as permitted elsewhere in this code.
2000 volts
310.3 (A)
A spot welder supplied by a 60 hertz system makes three hundred 20-cycle welds per hour. What is the duty cycle percent for this welder?
2.8%
630.31 (B) Informational note 3
300x20=6000/216,000=.0277777x100=2.77 or 2.8