Which starters require a 5-minute OFF interval after an ON cycle?

• A. Third and subsequent
• B. First
• C. Second
• D. All starters

Answer: (A)

The idea here is how repeated ON cycles heat the starter and must be limited by a cooling period. With each ON cycle, current surge and heat build up in the starter and its circuits. The rule specifies a 5-minute OFF interval only after you’ve already completed three ON cycles, to give the starter time to cool before another ON cycle. That means you can run two starts in a row, but once you reach a third start, you must wait five minutes before the next ON cycle. This is why the option describing third and subsequent starts is the best fit: it directly reflects the cooling requirement that kicks in after enough starts have accumulated. The other options would imply cooling after earlier starts or after every start, which isn’t how the policy is defined.