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Answer :
Final answer:
The minimum size RMC required for the 10 conductors is 1-¼ inches (Option b).
Explanation:
To determine the minimum size RMC required, we need to calculate the total cross-sectional area of the 10 copper conductors. Given that the cross-sectional area of the conductors is 0.836 sq-in, we multiply this by 10 to get the total area occupied by the conductors, which equals 8.36 sq-in.
The National Electrical Code (NEC) specifies that for a given area of conductors, the corresponding RMC size can be determined from tables provided. Consulting the NEC tables, we find that a 1-¼ inch RMC is sufficient for 8 conductors with a total area of 8.36 sq-in. Thus, the minimum size RMC required for the 10 conductors is 1-¼ inches (Option b).
The given statement "The minimum size RMC required for the 10 conductors is 1-¼ inches" is true because according to the National Electrical Code (NEC) tables, a 1-¼ inch RMC is sufficient for 8 conductors with a total area of 8.36 sq-in, which is the case here.
Correct option: b) 1-¼
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