Answer :
The internal diameter of 41 trade size PVC conduit is 35.8 mm.
What is PVC conduit?
PVC (polyvinyl chloride) conduit is a type of electrical conduit made of a combination of plastic and vinyl resins. PVC conduit is frequently utilized in indoor or outdoor electrical installations to keep electrical cables organized. PVC conduit is often used in residential and commercial construction.
Trade size refers to the diameter of the conduit and the wires within it. The trade size of conduit is determined by the quantity of conductors within it as well as their size. The internal diameter of the PVC conduit is specified in trade sizes. In general, the trade size of a conduit is given as a whole number.
The internal diameter of 41 trade size PVC conduit is 1.25 inches or 31.75 mm. The trade size of a PVC conduit is the outer diameter of the conduit, not the inner diameter.
As a result, the internal diameter of PVC conduit may be calculated using its trade size and the thickness of its wall. The wall thickness of a 41 trade size PVC conduit is 0.126 inches or 3.2 mm.
The internal diameter can then be calculated using the formula below:
Internal diameter = Trade size diameter - (2 × Wall thickness) = 1.66 - 2 × 0.126 = 1.408 inches= 1.408 × 25.4 = 35.8 mm
Therefore, the internal diameter of 35.8 mm.
None of the given option are correct.
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