In the past, the largest concern with running an overhead garage doorway was the probable dangers related to the springs useful for balancing the doorway pounds. Pre mid 1960's garage door installations ordinarily relied on a set of stretched (tensioned) springs to help the operation from the garage door pivoting hinges. These springs became loaded (tensioned) since the door was moved in to the closed place. Unloading (releasing) from the stored spring Electricity happened…