FB 2.20 provides installers and code enforcement officials with comprehensive guidance on the proper selection and application of the most common cable and flexible conduit fittings.
FB 2.20提供安装工人和在选择和应用普通电缆和可伸缩导管配件方面拥有全面指导经验的法典执行官员。
Explosion-proof flexible connecting pipes is used in explosion-proof telephone station, explosion-proof terminal, explosion-proof loud-speaker inlet or outlet to conduit and protect the cable.
防爆挠线连接管用于防爆电话站、防爆接线箱、防爆扬声器的输入，输出口到布线钢管之间的过渡连接，起到保护电缆的作用。
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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