CBO BC Training Quiz 26

251. The size of the water service pipe shall be not less than?

1/2" 1" 3/4" 3/8"

252. Each dwelling unit shall be provided with a ________ type accessible main shut-off valve?

Gate valve Quarter turn Partial-open Full-open

253. What is the minimum required slope for a 3” sewer drain line?

1/4" per 12" 1/8” per 12” 1/2" per 12" 3/8" per 12"

254. Energized equipment panelboards containing live electrical equipment shall have a clear workspace that extends from the floor up to a minimum of?

3' 4' 5' 6.5’

255. The minimum size of conductors for feeders and branch circuits shall be _____ copper?

16 AWG 10 AWG 12 AWG 14 AWG

256. A continuous load is defined as?

Maximum current expected for 3 hours or more Maximum current at any given time Maximum current or peak load in a 24 hour period Averaged current over a worst-case day

257. What is the minimum ampacity for a one-family dwelling?

100 amps 200 amps 50 amps 150 amps

258. All ungrounded conductors shall have?

Conduit Below grade sleaving A disconnect At least 30" ground cover

259. Overhead service conductors shall be no less than ____ over a residential driveway?

15' 13' 10' 12’

260. Each multi-wire branch circuit shall be provided with a means to?

Have enough slack to perform a splice Provide insulation to avoid overheating Simultaneously disconnect all ungrounded conductors Be covered by 1/2" gypsum as a minimum

CBO BC Training IRC Quiz 26

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