Selection of cable conduit
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I would like to ask experts: when choosing a conduit for the current ZRDJYPVP multi-core cable, 4x2x1.5, how should I make the selection? The coefficient required by the standard is 0.4. How to calculate it?
For 4x2x1.5, a galvanized pipe with a diameter of 3/4 should be selected.
A 3/4 pipe can’t accommodate 4×2×1.5, right? It doesn’t meet the standards and fails to achieve a coefficient of 0.4. I’ve seen that for 1×2×1.5 cables, 3/4” pipes are used for 1 cable per pipe, 1” pipes for 2–3 cables per pipe, 1-1/2” pipes for 4–6 cables per pipe, and 2” pipes for 7–15 cables per pipe. The 0.4 coefficient means that if the cross-sectional area of the conduit is 10, then it can accommodate cables with an area equal to 4 times that value; in fact, it’s normal to be able to fit 5 or 6 such cables as well.
3/4 inch pipes are definitely too small; if the pipeline is long and has bends, it’s best to use 1-1/4" pipes
Six In charge of will do just fine; there’s no problem at all