Half the people who contact Panel Upgrade Sudbury don't yet know what panel they own — they know what a broker or inspector said. This guide turns that second-hand worry into a first-hand fact.
Step 1 — Find the panel
In most Sudbury houses it's in the basement: near the electric meter's interior wall, in a utility or laundry room, sometimes at the back entry or in a cold room. In slab-on-grade and newer splits, check the garage or a main-floor closet. It's the grey (sometimes beige) metal box with the hinged door.
Step 2 — Open the outer door only
The hinged outer door is made to be opened by homeowners — swing it open freely. Never unscrew the inner metal cover; behind it are live parts, and there's nothing there you need for identification anyway.
Step 3 — Read for four names
Any of these on the label or door means you've found it:
- Federal Pioneer — the Canadian brand; by far the most common finding in Sudbury
- Stab-Lok — the breaker design name, often printed alongside
- Federal Pacific or FPE — the US parent branding, occasionally seen
- A Schneider Electric label on Federal Pioneer equipment — Schneider acquired the brand and still sells compatible breakers, so a newer label does not mean a newer design
Supporting tells: Stab-Lok breakers are distinctively slim — two circuits often share the width one standard breaker occupies elsewhere — and many (not all) carry red trip indicators. But the name is the evidence; treat handle colour as a hint only.
Step 4 — Let the house's age set your suspicion
Federal Pioneer equipment shipped in volume from roughly the 1950s into the late 1980s. Sudbury's construction history maps onto that almost perfectly — the nickel-boom decades built New Sudbury, the Valley subdivisions, Azilda and Chelmsford's bungalow streets, and the additions to older mining-town stock in Garson, Coniston and Copper Cliff. If your house predates 1990 and the panel has never been replaced, checking is worth your sixty seconds even without an insurance letter.
Found one of the names? Here's the sequence
- Photograph the label and the open panel (outer door open, inner cover untouched).
- Don't volunteer anything to your insurer yet — first get a quote and a booking, so when the conversation happens you have a plan and a date, not just a problem.
- Send the photos with your quote request. For most houses that's enough to price the job without a site visit. Costs are published on the 2026 cost page.
If the label instead says Commander, Sylvania or CEB — the other name family insurers flag — you're on the wrong page, but we have the right one: the Commander & Sylvania guide.