How many fused spurs are permitted to be connected to a ring circuit?

• A. Two
• B. Four
• C. Unlimited
• D. One

Answer: (C)

When you have a ring final circuit, you can tap off from it to feed additional outlets or equipment through spurs. A fused spur is simply a branch with its own overcurrent protection. There is no fixed limit on how many of these fused spurs you can connect to a ring final circuit—the practical constraint is the total current that the ring and its conductors can safely carry. As you add more spurs, you must keep the combined load within the circuit’s rated capacity and ensure each spur has the correct fuse rating for its cable and load. In other words, you can have many fused spurs, as long as the overall demand doesn’t exceed what the ring circuit can handle.