Electrical Panel Upgrades in Cornish, Maine

By Census count, Cornish has proportionally more pre-1960 houses than Limerick, Limington or Parsonsfield: about 36 percent of its homes predate 1960 and roughly 18 percent predate 1940. That count takes in the old village houses on Main and Maple, some of them dragged down from the High Road behind ox teams in the 1850s. Nobody wired those buildings when they were raised; electricity came later, often in several rounds, and the service is frequently where the weakness sits: a fuse box, a 60-amp service, a Federal Pacific or Zinsco panel, or a patchwork of old and new gear added each time a generation wanted more power.

What is arriving now is heat. Census figures show nearly three in four occupied homes here burning oil, more than in any neighboring town, and trading that boiler for heat pumps shifts the heating onto the electric service in one step. Going to 200 amps typically means a new panel, meter socket, service-entrance cable and, in most houses, a new mast, with the grounding brought current as well. Maine now requires an outdoor emergency disconnect, mounted in sight of the house and no farther than 50 feet from it, whenever a one- or two-family home gets a brand-new or fully upgraded service. Under the board’s guidance, a state electrical permit is always required for village buildings carrying two or more meters and for dwellings of two families or more.

Close to 7 percent of homes in town sit in two- to four-unit buildings, which typically means a meter bank with a panel for each apartment, and upgrading one unit while ignoring the rest seldom works. Goodnow Electric plans for the whole building, files for the state electrical permit, arranges with Central Maine Power to cut and restore the service, and books the state inspector. Inside the Historic District Overlay, moving a mast or meter onto a wall facing the street is a question for the code office before work starts. While the panel is open, a whole-house surge protector and a generator inlet can go in on the same visit. Estimates cost nothing and come in writing, and the owner is there for the work.