Old Wiring in Keuka Lake Homes: Knob-and-Tube, Fuse Panels, Service Upgrades, and Inspections

Last reviewed: October 21, 2026. General information only, not electrical, legal, or insurance advice. Electrical work is dangerous; hire a qualified electrician, and confirm permit and inspection rules with your town or village code enforcement office before work starts.

As an Amazon Associate, Living on Keuka earns from qualifying purchases. See our disclosure.

A lot of homes around Keuka Lake started life as summer cottages, farmhouses, or village houses built long before anyone plugged in a heat pump, an induction range, or an electric car. Over the decades, owners added circuits a few at a time. The result is that a pretty lake house can hide wiring from three or four different eras behind its walls, and the electrical system is often the part of an older home that buyers understand least.

This guide covers the old wiring types you’re most likely to run into (knob-and-tube, fuse panels, early aluminum branch wiring, and undersized service), why insurers care, how electrical inspections work in the Keuka towns and villages, what to expect when you upgrade service with NYSEG or the Penn Yan municipal utility, and which state programs can help pay. It belongs to our Older Homes section; for the bigger picture on older houses, start with our older homes guide.

Why wiring matters more in lake houses

Older electrical systems were designed for a few lights and small appliances. Year-round living asks much more of them:

• Heat and hot water. Converting a seasonal cottage often means adding electric heat, a heat pump, or a heat pump water heater, each of which needs dedicated circuits and panel capacity.
• Well pumps and septic equipment. Many Keuka homes have a private well pump, and some have septic pumps or alarms. When the power or a circuit fails, you lose water, not just lights.
• Damp places. Basements, crawlspaces, boathouses, docks, and lift motors put electricity close to water. Modern codes call for ground-fault protection in many of those spots; older systems usually don’t have it.
• Insulation projects. Air sealing and insulating an old cottage is one of the best ways to cut heating costs, but insulation and some old wiring types don’t mix, as explained below.

If you’re converting a seasonal cottage to year-round use, assume the electrical system needs an evaluation before you add big loads.

Old wiring types you may find

Knob-and-tube wiring

Knob-and-tube is the earliest common wiring method: individual wires run through ceramic tubes in framing and over ceramic knobs in open air, with no ground wire. It was designed to shed heat into the open space around it. Problems usually come from age and from later changes: cloth or rubber insulation that has become brittle, splices added by previous owners, and building insulation packed around wires that were meant to stay in open air.

That last point is why weatherization programs treat it carefully. New York’s EmPower+ program manual (August 2026 edition) tells participating contractors to inspect for knob-and-tube and note its location. If it’s in the attic, the contractor may insulate while making sure no insulation is in direct contact with the wiring, or propose removing the knob-and-tube so the attic can be fully insulated. If you’re planning an ice dam or attic insulation project, find out first whether any knob-and-tube is still live.

A house can also look updated and still have knob-and-tube in service: newer outlets and fixtures may have been spliced onto old circuits. Only an electrician tracing circuits can tell you how much is still energized.

Fuse panels

Screw-in fuse panels were standard before circuit breakers. A fuse panel isn’t automatically dangerous, but it often signals an older, smaller service, and it invites a risky habit: replacing a blown fuse with a larger one so it stops blowing, which removes the protection the fuse was supposed to provide. Insurers ask about fuses (see below), so know what you have.

Aluminum branch-circuit wiring

The U.S. Consumer Product Safety Commission says a copper shortage in the mid-1960s led builders to use aluminum for ordinary 15- and 20-amp household circuits. CPSC says homes built before 1965 are unlikely to have aluminum branch wiring, but cables installed between 1965 and the mid-1970s, including in additions and rewired circuits, may contain it. Its research found that pre-1972 homes wired with aluminum were 55 times more likely than copper-wired homes to have at least one outlet connection reach “fire hazard conditions.”

CPSC’s Publication 516 says failing aluminum connections seldom give warning signs, and lists signs that call for an electrician: face plates that are hot to the touch, flickering lights, circuits that don’t work, or a smell of burning plastic at outlets or switches. Its recommended permanent repairs are rewiring with copper or specific connector repair methods, done by a qualified electrician. Don’t try to fix aluminum connections yourself.

A cottage built in the 1960s or 1970s, or an older house with an addition from that era, is worth checking for aluminum wiring even if the original part of the house is copper.

Undersized service

Many older homes have 60- or 100-amp service. That may be fine for a small cottage with oil or propane heat, but adding heat pumps, an electric water heater, an EV charger, or a large well pump can push the panel past its capacity. An electrician can do a load calculation to see whether you need a bigger service, a new panel, or simply better circuit planning.

Why insurers ask about wiring

Insurance companies decide for themselves which homes they’ll write, and wiring is one of the questions they ask. One example from a New York insurer: Utica First Insurance Company’s agency underwriting guidelines for New York homeowners policies (revised September 2024) list dwellings with knob-and-tube or aluminum wiring and/or service below 100 amps among the risks it won’t accept, and say that homes on circuit breakers need at least 100-amp service, or 200 amps with electric heat, with no Federal Pacific breakers. Its top-tier programs also exclude fuses. Other insurers have their own rules, which may be stricter or looser.

What this means for you:

• Before you buy, tell your insurance agent what the inspector found and ask in writing whether the company will write the policy as-is, with conditions, or only after repairs. Our home insurance guide covers what else to ask.
• If you already own the house, answer insurance applications accurately. A misstatement about wiring can cause trouble at claim time.
• If standard insurers decline, New York has an insurer of last resort, the New York Property Insurance Underwriting Association (NYPIUA). The Department of Financial Services describes it as a source of basic coverage for people who can’t get it in the voluntary market. NYPIUA’s coverage is limited; it doesn’t include liability, theft, or flood, so it’s a stopgap while you fix the problem, not a long-term plan.

Permits and electrical inspections around Keuka

New York doesn’t license electricians at the state level. As the New York Electrical Inspection Agency (NYEIA) puts it, each municipality has its own local law governing who may do electrical work, and many allow anyone to do it. But whoever does the work, it must be inspected by an authorized electrical inspector for code compliance. Some places that do require a license exempt owner-occupants doing work on their own home, but the inspection still applies.

Around the lake, inspections are usually done by approved third-party agencies rather than town staff. NYEIA’s municipal list (checked October 2026) includes the Towns of Jerusalem and Milo and the Village of Penn Yan in Yates County, and the Towns of Pulteney, Urbana, and Wayne and the Village of Hammondsport in Steuben County. Other agencies may also be approved. The Town of Barrington’s code enforcement office can tell you which inspectors it accepts. In every town and village, call the code enforcement officer before work starts to ask whether you also need a building permit.

Which code applies? The 2025 New York State Uniform Code took full effect on December 31, 2025, and it adopts the 2023 National Electrical Code for electrical work with permits issued on or after that date. Projects permitted earlier can continue under the 2020 Uniform Code (2017 NEC). In general, existing wiring that was legal when installed isn’t automatically illegal, but new work, alterations, and additions must meet the current code, and an inspection or insurance requirement may push you to replace old wiring anyway.

What to ask an electrician

• Are you insured for liability and workers’ compensation? (Ask for certificates.)
• Which inspection agency will inspect the job, and who schedules it?
• Will you trace the circuits and tell me how much knob-and-tube or aluminum is still live?
• What will a load calculation show if I add a heat pump, an EV charger, or an electric water heater later?
• Does your quote include patching plaster or drywall after rewiring? (It often doesn’t.)
• Do you work with NYS Clean Heat or EmPower+ contractors if I’m adding a heat pump?

Our guide to hiring contractors around Keuka covers written contracts, deposits, and insurance in more detail.

Upgrading your service: NYSEG and Penn Yan

Who you call depends on who supplies the power. Most of the Keuka area is served by NYSEG; the Village of Penn Yan runs its own electric utility, Penn Yan Municipal Utilities (PYMU). Your electric bill tells you which one serves your house.

• NYSEG handles service upgrades through its online “Upgrade or Relocate” request. In practice your electrician usually files and coordinates it. Expect NYSEG to ask for permit or inspection paperwork and possibly a site visit before it schedules the work, and ask your electrician how long NYSEG is currently taking in your area.
• Penn Yan Municipal Utilities publishes an Electric Services and Meters booklet. It says adequate capacity of the service equipment is the customer’s responsibility, that the customer must furnish, at its own expense, an electrical inspection before PYMU will energize a new installation or service upgrade, and that inspection certificates are only accepted from agencies PYMU has approved. PYMU keeps a list of approved inspectors. Its residential electric service application asks for the old and new amperage and voltage.

Plan service upgrades for the warm months if you can. Winter work on a meter or service drop means the power is off in the cold, and frozen ground complicates trenching for underground service.

Programs that can help pay

• EmPower+ (NYSERDA). For income-eligible households, the August 2026 EmPower+ manual lists Sustainable Futures funding of up to $5,000 for a panel box replacement and up to $2,500 for an electrical wiring upgrade, on top of other project incentives. The wiring measure can cover dedicated circuits for new heat pumps or appliances, health and safety wiring repairs, and upgrading knob-and-tube when another measure is being installed. Work goes through a participating contractor. See our heating costs guide for how EmPower+ fits with other programs.
• NYS Clean Heat. NYSEG customers adding a heat pump get rebates through participating contractors. The rebate covers the heat pump; ask the contractor how any panel or wiring work will be priced and itemized.

Program terms change, so confirm current amounts with NYSERDA or your contractor before you sign.

A buyer’s checklist for older wiring

1. Ask the seller when the house was last rewired and whether the panel has been replaced. Get receipts and inspection certificates if they exist.
2. Look at the panel during showings: fuses or breakers, the brand, and the main breaker size.
3. Have your home inspector note wiring types and any visible problems, and bring in an electrician if the house is pre-1950, has a 1965-1975 section, or shows knob-and-tube or aluminum.
4. Call your insurance agent before your inspection contingency runs out.
5. Price repairs in writing, including wall patching, and decide whether to negotiate a credit.
6. Check outbuildings, boathouses, docks, and lift power, which are often the least code-compliant circuits on a lake property.
7. Make sure smoke and carbon monoxide alarms are working, especially in a house with fuel-burning heat. If you rely on a generator during outages, confirm it connects through a proper transfer switch or interlock.

What to have on hand

Inexpensive items for basic checks and safety (links go to Amazon search results). These don’t replace an electrician’s evaluation:

• Plug-in outlet testers with a GFCI test button for quick checks of wiring faults at receptacles
• Non-contact voltage testers to confirm a circuit is off before changing a light fixture or cover plate
• Combination smoke and carbon monoxide alarms

Frequently asked questions

Official sources

• U.S. CPSC: Repairing Aluminum Wiring (Publication 516, PDF)
• NYSERDA: EmPower+
• EmPower+ Program Manual, August 2026 (PDF, contractor support site)
• NYS Department of State: Notice of Adoption, 2025 Uniform Code
• New York Electrical Inspection Agency: 2023 NEC adoption through the 2025 Uniform Code
• New York Electrical Inspection Agency: Do I need to be licensed to do electrical work in New York?
• New York Electrical Inspection Agency: municipalities served
• NYSEG: Upgrade or Relocate service
• Penn Yan Municipal Utilities: Electric Services and Meters booklet (PDF)
• Utica First Insurance: New York homeowners agency underwriting guidelines (PDF)
• NYS DFS: Problems obtaining homeowners insurance
• Keuka Lake Association: Key governmental contacts

Related on Living on Keuka: Older homes around Keuka · Home inspections for lake property · Converting a seasonal cottage · Home insurance · Hiring contractors · Well pumps and pressure tanks

Across the network: buying an older house farther south? See Hornell Living’s older home buying checklist.