When testing a high line system, what is recommended to use as the first load?

Using a non-essential equipment load as the first load when testing a high line system is a prudent choice because it minimizes risk while allowing for essential system checks. This approach enables operators to assess the integrity and performance of the high line under controlled conditions without jeopardizing safety or operational readiness.

Non-essential loads can include equipment that is not critical to the mission, which allows for adjustments to be made in case of any issues during the test. It enables the team to evaluate how the system handles weight and to identify any potential failures in the rigging or hardware before introducing critical loads or personnel involvement. This method ensures that any failures can be addressed without significant consequences, providing an opportunity to refine and improve the system's reliability before actual operational use.

In contrast, heavy weights or any essential equipment load would be less desirable as initial testing loads since they carry the risk of damaging vital gear or endangering personnel if the system does not perform as expected.