1.(1)φ15 钢管:
四线:(4-1.5-0.1)+8+5+7+7+7+4+(0.1+0.2)=40.7 (m)二线:7+5+5+8+5+4+(4-1.5)+7+4.5+2.5+(0.1+0.2)=50.8(m)合计:40.7+50.8=91.5(m)(2)ZRN-BV1.5 阻燃导线穿线:二线:50.8×2=101.6(m)四线:[0.5+0.3+40.7]×4=166(m)总计:101.6+166=267.6(m)2.3.