Thiết bị & Hệ thốngCâu 302 / 521
A non-Type IC recessed luminaire must be spaced at least how far from combustible material, except at the points of support?
a.1/2 inch
b.1 inch
c.3 inches
d.6 inches
Giải thích
Section 410.116(A)(1) requires a minimum 1/2 inch clearance between a non-Type IC recessed luminaire and combustible material, except at the points where the fixture is supported. Larger clearances such as 3 inches apply to thermal insulation, not to the general combustible-material spacing.
Trích dẫn luật: 2023 NEC §410.116Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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