Designer and electrician assistance

Designer and electrician assistance

Current load on the wires and cables, rubber, PVC insulated

Permissible continuous currents for wires with a rubber or PVC insulation, cords with rubber insulation, and cables with rubber or plastic insulation in the lead, PVC and rubber covers are shown in Table (1-9) according to the EMP (Section 1, it.1.3.10 -1.3. 11). The values of currents are adopted for the temperatures: +65 of cores, ambient air +25 and land +15 º C.

While determining the number of wires installed in one pipe (or cores of a multi-core conductor), the zero working four-core conductor of three-phase current, as well as grounding and zero protective conductors shall not be considered.