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T/F: radial more reliable than network

Short answer

False. A radial system has a single supply path, so any fault causes an outage for all loads beyond it. A network system interconnects multiple feeders and transformers, clearing faults automatically without interruption, making it far more reliable than radial.

State whether the following statement is TRUE or FALSE. Justify your answer with a brief explanation: Radial distribution system is more reliable than Network system.

FALSE.

A network (mesh) system is the most reliable distribution system, and a radial system is the least reliable.

  • Radial: each consumer has only one supply path. A fault anywhere on the feeder, or on the single distribution transformer, interrupts every consumer beyond that point until it is repaired.
  • Network: feeders and secondary mains are interconnected and fed from several transformers and feeders through network protectors. A fault on one feeder or transformer is cleared automatically, and the load is carried by the remaining paths without interruption. A network can withstand a single (and often a double) contingency.
PointRadialNetwork
Supply pathsOneMany
Effect of a faultOutage downstreamUsually no outage
Voltage regulationPoor at the far endVery good
Cost and complexityLowestHighest
Typical useRural and small loadsDense city centres, hospitals, airports

The radial system is preferred for being cheap and simple, not for its reliability.

✓ Answer checked by Claude Opus 5.5 (high effort)

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