If the line is dead-ended, the maximum number of connections is:

• A. 10
• B. 15
• C. 20
• D. 25

Answer: (C)

When a line is dead-ended, you terminate the line at a point and don’t pass it through to another stage. The number of connections you can safely place at that termination depends on the capacity of the terminal/terminating point to maintain secure, low-resistance contacts and to dissipate heat. In this context, the stopping point is designed to handle up to twenty conductors without degrading reliability or causing overheating, so twenty is the maximum. Using fewer connections keeps within the safe side, while exceeding the limit risks loose connections and excessive heat.