UL 1990-2005
带导线的非金属地下导管

UL Standard for Safety Nonmetallic Underground Conduit with Conductors (Third Edition)

UL 1990-2005 发布历史

1.1 These requirements cover nonmetallic underground conduit with conductors. These products consist of a factory assembly of conductors or cables inside a coilable, smooth-wall, continuous length conduit with a circular cross section. The conduit is Schedule-40, Schedule-80, EPEC-A or EPEC-B High Density Polyethylene (HDPE) in trade sizes 1/2 (16) - 4 (103). This product is intended for installation in accordance with the National Electrical Code, NFPA 70. The values in parentheses are metric trade designators of conduit. The designations Schedule-40, Schedule-80, EPEC-A and EPEC-B refer to conduit having specific outside diameters and wall thicknesses. 1.2 This product is for aboveground use where encased in not less than 2 inches (51 mm) of concrete and for underground use by direct burial or encasement in concrete.

UL 1990-2005由美国保险商实验所 US-UL 发布于 2005-08-18。

UL 1990-2005 在中国标准分类中归属于: P94 金属设备与工艺管道安装工程，在国际标准分类中归属于: 29.120.10 导线管。

UL 1990-2005的历代版本如下：

• 1998年04月30日 UL 1990-1998 带导体的非金属地下导管
• 2005年08月18日 UL 1990-2005 带导线的非金属地下导管
• 2013年11月22日 UL 1990-2013 带导线的非金属地下导管

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标准号

UL 1990-2005

发布日期

2005年08月18日

实施日期

废止日期

无

中国标准分类号

P94

国际标准分类号

29.120.10

发布单位

US-UL

代替标准

UL 1990-2013

适用范围

1.1 These requirements cover nonmetallic underground conduit with conductors. These products consist of a factory assembly of conductors or cables inside a coilable, smooth-wall, continuous length conduit with a circular cross section. The conduit is Schedule-40, Schedule-80, EPEC-A or EPEC-B High Density Polyethylene (HDPE) in trade sizes 1/2 (16) - 4 (103). This product is intended for installation in accordance with the National Electrical Code, NFPA 70. The values in parentheses are metric trade designators of conduit. The designations Schedule-40, Schedule-80, EPEC-A and EPEC-B refer to conduit having specific outside diameters and wall thicknesses. 1.2 This product is for aboveground use where encased in not less than 2 inches (51 mm) of concrete and for underground use by direct burial or encasement in concrete.