PC Special Occupancies and Equipment 3

Question 1

In a theater or similar occupancy covered by NEC Article 520, portable stage switchboards must be protected by overcurrent devices not exceeding what percentage of the switchboard's ampere rating?

Accepted Answer

125%

Answer

NEC 520.25 requires overcurrent protection for portable stage switchboards not exceeding 125% of the switchboard ampere rating.

Question 2

According to NEC Article 525, temporary wiring for carnivals and fairs must use what minimum conductor size for branch circuits?

Accepted Answer

12 AWG

Answer

NEC 525.20(E) requires all branch circuit conductors for carnivals and fairs to be not smaller than 12 AWG.

Question 3

Under NEC Article 690 for solar photovoltaic systems, what is the maximum voltage permitted for a PV system installed on or in a one- or two-family dwelling?

Accepted Answer

600 volts

Answer

NEC 690.7(A) limits PV system maximum voltage to 600 volts for systems on or in one- and two-family dwellings.

Question 4

For electric vehicle charging stations covered by NEC Article 625, EVSE (Electric Vehicle Supply Equipment) installed outdoors must be listed for what environment?

Accepted Answer

Wet locations

Answer

NEC 625.22 requires that outdoor EVSE be listed and identified for wet locations.

Question 5

NEC Article 700 covers emergency systems. These systems must be tested under load within how many hours after installation and at least every how often thereafter?

Accepted Answer

24 hours after installation; every 6 months

Answer

NEC 700.3(B) requires emergency systems to be tested within 24 hours of installation and at intervals not exceeding 6 months.

(PC) Professional Electrical Contractor Practice Test

(PC) Professional Electrical Contractor Practice Test

PC Special Occupancies and Equipment 3