Advanced Wiring第 68 / 110 题
A Class 2 power-limited circuit at 30 V or less is limited to a maximum power of:
a.1,000 VA
b.250 VA
c.500 VA
d.100 VA
解析
Class 2 circuits are inherently limited low-energy circuits; a typical alternating-current source limit is 100 VA at up to 30 V for reliable low-energy protection.
法律依据: 2023 NEC Chapter 9 Table 11(B)免费刷完整 110 道题库 — 无需注册。
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