How long should a timed set with unlimited reps be?

male working on strength workouts to build muscle

I only have light 10llb weights and would prefer to do as many reps as I can in one set instead of counting reps. With heavy weights I do 4 sets of 12 reps.

What would be the equivalent/good amount of time for a timed set (when I'm not counting reps)?

submitted by /u/blackhairjones
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