In a ______ layout, power can be supplied to the customer from two different directions.

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Two-direction supply is achieved through a loop arrangement. In a loop layout, feeders form a closed path around the area served, so a customer tap can be fed from either direction along the loop. If one section is out of service, the other path around the loop can still bring power to the customer, providing redundancy and improving reliability. A branch layout provides power along a single feed to customers, with no alternate route to reach them. The other topology terms describe different network shapes but do not inherently guarantee the two-direction feed to a given customer in the same way the loop does. This is why the loop layout is the correct description for supplying a customer from two directions.