Q
QuestionEngineering

When bending a 90 -degree bend on a 1 / 2'' EMT conduit, what do you deduct? A) 3 inches B) 4 inches C) 5 inches D) 6 inches
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Answer

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Step 1:
I'll solve this electrical conduit bending problem step by step:

Step 2:
: Understand EMT Conduit Bending

When making a 90 -degree bend in electrical metallic tubing (EMT) conduit, there's a standard deduction length used to account for the arc of the bend.

Step 3:
: Identify the Standard Deduction

For 1/2'' EMT conduit, the standard deduction for a 90-degree bend is $$5 \text{ inches}$$.

Step 4:
: Explanation of Deduction

This 5 -inch deduction helps electricians accurately measure and place conduit runs. When you bend a 90 -degree angle, the conduit's length is effectively shortened by 5 inches due to the curvature of the bend.

Step 5:
: Verification

This is a standard practice in electrical conduit installation, ensuring precise measurements when routing conduits around obstacles or between junction points.

Final Answer

Key Points: - The deduction applies specifically to 1 / 2'' EMT conduit - Always subtract 5 inches when calculating total conduit length for a 90 -degree bend - This helps maintain accurate measurements in electrical installations