Three kinds of Kingston homes end up needing a new panel
Knob & Tube Kingston sees panel upgrades arrive from three directions, and it's worth knowing which one you are — because it changes both the urgency and the smart scope of the job.
- The 60-amp fuse box — the classic century-home service, still live in plenty of Sydenham, Portsmouth and Kingscourt basements. Insurers frequently refuse these outright: a 60-amp fuse service built for 1920s loads is a red flag on its own, and it usually signals knob and tube behind the walls too. This is the deadline-letter version of the panel problem
- The 100-amp home adding modern loads — an EV charger, a heat pump, a hot tub. Any one of these is among the largest loads a house can carry, and a 100-amp service that was comfortable in 1995 runs out of room fast. No insurance letter here — just a load calculation that says "not enough"
- The Stab-Lok owner — if your panel is a Federal Pacific / Federal Pioneer Stab-Lok, the panel is being replaced anyway because the breakers are documented to fail to trip. Since the service will be open, upgrading to 200 amps at the same time costs only the increment
What a panel upgrade actually involves
Despite the "major surgery" reputation, a service upgrade is a well-rehearsed, one-day sequence for a licensed crew:
- Utility disconnect — coordinated in advance with the utility, so the power goes off on schedule in the morning, not by surprise
- New panel, mast and meter base — the old fuse board or breaker panel comes out; a modern 200-amp panel goes in, with the mast and meter base replaced where the service size is increasing
- Circuit transfer — every existing circuit is moved to the new panel, re-terminated and labelled properly, often for the first time in the house's life
- ESA inspection — the work runs under an ESA permit, the Electrical Safety Authority inspects it, and the utility reconnects. Ontario law requires all of this to be done by an ECRA/ESA Licensed Electrical Contractor — no exceptions, and no shortcut that still produces the certificate
Power is typically off for most of one working day. Keep the fridge doors closed and you'll never notice. The paperwork that follows — the ESA Certificate of Inspection — is the part your insurer actually reads: it's what lifts a refusal or a 50–300% surcharge and restores standard rates, typically $500–$1,500 a year in savings.
Why century homes should almost never do the panel alone
Here's the honest advice that saves Kingston homeowners real money: if your house has knob and tube, don't upgrade the panel in isolation. Yes, it can be done — a new panel can feed old circuits. But your insurer flagged the wiring and the service, and a gleaming 200-amp panel feeding 1920s ungrounded circuits may still leave you refused or surcharged. You'd have spent panel money without closing the file.
The economics point the same direction. A full rewire and a panel upgrade share their most expensive ingredients: one ESA permit, one crew mobilization, walls and ceilings that are already open for cable-fishing, one round of patching, one inspection. Sequenced as two separate projects, you pay those costs twice. Combined, a large century home lands in the $14,000–$25,000 tier — full rewire plus 200-amp panel, one certificate covering everything, insurance file closed permanently. The full price table is on our cost page.
Not sure whether you need 100 or 200 amps — or whether the wiring has to be part of the job? That's exactly what the free assessment answers. A licensed partner electrician runs the load calculation, checks what's actually feeding your circuits, and puts a written quote in your hands within 24 hours. Start with the quote form or call.