聚氯乙烯绝缘电线明敷的载流量( θn=70℃) 单位: A ............................................................................................................................................................ 2
交联聚乙烯绝缘电力电缆直埋地敷设的载流量(ρ τ=1.2℃× m/W) .................................................................................................................................................. 3
架空绝缘电缆的载流量( θa=30℃θ n=65