A section of translucent honeycomb-formation insulation in the floor of a mezzanine level also allows heat and sunlight to filter through to a traditional Japanese tatami room situated directly below.
The total area of the wires inside the tube (including the insulation coat) should not be more than 40% of the area of the internal section of the pipe.
管内导线包括绝缘层在内的总面积不应大于管子的内截面的40%。
3
All the cable section , insulation Dia . ar . armored or not should be signed .