Problemas
Assuming the system voltage is less than 1 ,000V, what is the MINIMUM length of a pull box with one 3'' conduit and two 2'' condults entering on one side of the box and all exiting at a 90^circ angle? 14 inches 16 inches 18 inches 22 inches
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Jaime
professionell · Tutor durante 6 años
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(266 Votos)
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To determine the minimum length of a pull box, we need to refer to the National Electrical Code (NEC) guidelines. According to NEC Table 314.16(B), the minimum length of a pull box can be calculated based on the number of conduits and the angle at which they enter and exit the box.For this scenario:- There is one 3-inch conduit.- There are two 2-inch conduits.According to NEC Table 314.16(B), for a pull box with one 3-inch conduit and two 2-inch conduits entering and exiting at a 90-degree angle, the minimum length of the pull box is 18 inches.Therefore, the correct answer is:18 inches