Marty Tippin
10-20-2014, 8:15 PM
3 wire or 4 wire feeder from main panel to sub-panel in a detached building?
My detached building is fed with 4-wire (neutral is isolated from ground in the sub-panel), but it seems like maybe I should only be using 3 wire instead with a separate ground at the subpanel (the ground system for the sub-panel is the subject of another thread I recently started).
If I should only be running 3 wires to the sub-panel, can I simply disconnect the ground conductor in the main panel, tape it off and leave it in place?
My detached building is fed with 4-wire (neutral is isolated from ground in the sub-panel), but it seems like maybe I should only be using 3 wire instead with a separate ground at the subpanel (the ground system for the sub-panel is the subject of another thread I recently started).
If I should only be running 3 wires to the sub-panel, can I simply disconnect the ground conductor in the main panel, tape it off and leave it in place?