Mạch nhánh & Đi dâyCâu 223 / 521
Under what condition may Type MC cable be installed in a wet location?
a.Never, MC is dry-location only
b.Always, MC is unrestricted
c.Only when it is listed and identified for wet locations with a suitable moisture-impervious jacket
d.Only where installed underground
Giải thích
Per 330.10, MC cable may be used in wet locations only where the metallic covering is impervious to moisture (or a jacket is provided) and the cable is listed/identified for the use. It is not unrestricted, and wet-location use is not limited to underground runs.
Trích dẫn luật: 2023 NEC §330.10Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Per 334.12, which of the following installations is NOT permitted for Type NM cable?
- Per 330.30, Type MC cable must be supported and secured at intervals not exceeding what distance?
- Which statement about Type MC cable ampacity is correct?
- Per 320.40, what must be installed at each termination of Type AC (armored) cable to protect the conductors from the cut edge of the metal armor?
- Per 320.30, Type AC cable must be secured and supported at intervals not exceeding what distance?
- Which cable relies on its metal armor together with an internal aluminum bonding strip to serve as the equipment grounding path?
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