The National Electrical Manufacturers Association (NEMA) has published FB 2.20-2007 Selection and Installation Guidelines for Fittings for Use with Flexible Electrical Conduit and Cable.
美国国家电气制造商协会出版了FB 2.20 - 2007用于电气管道和电缆配置的选择和安装手册。
The National Electrical Manufacturers Association (NEMA) has published FB 2.20-2007 Selection and Installation Guidelines for Fittings for Use with Flexible Electrical Conduit and Cable.
美国国家电气制造商协会出版了FB 2.20 - 2007用于电气管道和电缆配置的选择和安装手册。
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