What is the proper length for a terminal jumper?

The correct approach for a terminal jumper is to make it as short as possible without hindering movement. This principle ensures that the jumper is effective in maintaining a reliable electrical connection while also reducing the risk of unnecessary electrical resistance or potential interference. A shorter jumper minimizes the likelihood of damage from vibration or movement, and it helps maintain a tidy and organized wiring layout within the aircraft.

In practice, making the jumper too long could introduce problems, such as increased resistance, susceptibility to noise, or difficulty in securing it properly to prevent movement. It is essential to maintain both functionality and safety in aircraft systems, which is why the focus is on a shorter length that adequately serves the purpose without compromising other factors.