When using a "6 foot" energy absorber, what is the maximum pull out distance when calculating fall distance?

The maximum pull-out distance when using a "6 foot" energy absorber is indeed four feet. This measurement is derived from the characteristics of the energy absorber itself, which is designed to decelerate and absorb some of the energy generated during a fall.

The fall distance includes not just the length of the energy absorber, but also additional factors like the length of the lanyard and the initial distance from the fall's starting point to the anchor point. In this case, the energy absorber will typically allow for an additional pull-out distance from the point of fall before the deceleration begins.

By considering the full dynamic behavior of the energy absorber, the maximum pull-out distance would effectively be restricted to four feet. This accounts for an adequate safety margin and ensures that the fall arrest system operates within safe limits, protecting the user from free fall beyond the point of the energy absorber's activation.