knob-and-tube

Isaac Kremer/ November 23, 2025/ / 0 comments

An electric wiring system used in concealed spaces; wires are threaded through insulated tubes at joists and studs and are held along the surface of members by insulating knobs; typically made of porcelain, but also included glass and pottery. See also electric wiring, porcelain cleats. (Bucher, 1996)

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IsaacKremer.com is the personal website of Isaac Kremer, MSARP, a nationally recognized leader in the Main Street Approach to commercial district revitalization with over 25 years of experience. Kremer, New Jersey's first certified Main Street America Revitalization Professional (MSARP), has served as founding executive director for organizations like Experience Princeton and the Metuchen Downtown Alliance, which won a Great American Main Street Award under his leadership. He recently became director of the Royal Oak Downtown Development Authority in Michigan.

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