NEMA RV 2-2005 Application and Installation Guidelines for Nonmetallic-Sheathed Cable and UndergrounNEMA RV 2-2005 Application and Installation Guidelines for Nonmetallic-Sheathed Cable and Underground Feeder and Branch Circuit Cable
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。