NH-RVS twisted pair labeling
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I’m having trouble with the supervisor: when the NH-RVS twisted pair used for construction was brought in for inspection, the supervisor said that there should be markings on the insulation cover. Is there such a requirement? Must the insulation covering of twisted pair cables have markings, just like the outer insulation layer of the cable?
This sea friend must be an amateur supervisor! The cable model and specifications are all indicated on the outer sheath! Furthermore, how can such thin cable cores be labeled? **There are no such specifications in the standards! Please refer to the accompanying drawings in the specifications for fire-resistant cables!