Explanation: Section 300.38 of the 2020 National Electrical Code specifies raceways installed in a wet location are considered wet locations. This includes the inside of the raceway as well.
Explanation: Section 250.52(A)(1) requires the pipe to be in direct contact with the earth for a minimum of 10 ft but no minimum depth is required. John Lupacchino is a senior design engineer with ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
反馈