Knob and Tube Wiring Replacement
Your home's original wiring kept the lights on for decades, but it was never built for the electrical demands of modern life. If your home still has knob and tube, it's time to talk about a safer, code-compliant upgrade.
Fire & Saftey Standards
Whole-Home or Essential Circuits
25+ Years Experience
📍Serving Beaverton, Portland, Hillsboro, TIgard, Lake Osegawo & greater Portland Metro area
Why Portland Homeowners are Concerned About their Home Wires
Homes built before 1950 often still have knob and tube wiring hidden behind the walls. Those original circuits were never designed for today's electrical demands, especially if you're planning for electrical panel upgrades, new appliances, or future home electrification.
Saftey Concerns from Wiring
Hot and neutral wires through ceramic insulators with no ground conductor and no protective sheathing are the kind of electrical arcing that starts fires inside walls.
Insurance and Resale Support
Many carriers in Oregon will decline coverage or charge steep premiums on homes with active knob and tube wiring.If you're buying, selling, or refinancing, it's one of the first things an inspector will flag.
Code-Compliance issues
Under the National Electrical Code NFPA 70, Article 394, knob and tube wiring is not permitted to be in contact with thermal insulation. Trapping heat around those old conductors is a recipe for trouble, and it puts your home out of compliance with the code your local inspector enforces.
Readiness for Modern Loads
Upgrade old circuits so your home is better prepared for appliances, home offices, heat pumps, EV chargers, and future electrical additions.
Many older homes need rewiring and panel upgrades together which K&T won’t offer. We can coordinate both so your wiring and panel are ready for the same long-term plan.
Energy Efficiency
With how old many of the homes that use the knob and tube wiring are, houses tend to be under-insulated leading to increased prices on energy usage
Modern Alternatives
A full rewire replaces the old knob and tube runs with Romex (NM-B), the current standard for residential wiring. Romex bundles hot, neutral, and ground conductors inside a plastic sheath, giving you proper fault protection and the capacity to run modern loads safely.
Our Recommendation
Insurance is often the wake-up call. Many carriers in Oregon will decline coverage or charge steep premiums on homes with active knob and tube wiring. If you're buying, selling, or refinancing, it's one of the first things an inspector will flag. Give us a call and we'll give you all the answers you need! You'll be glad you did
What to Expect from Your Generator Install
A good generator install is about planning and integration, not just equipment. Here's how we approach it:
Assessment and planning
The electrician maps out the existing circuits where every outlet, switch, and fixture lives. They also evaluate the panel, that needs upgrading at the same time.
Opening up access.
To run new Romex, the electrician needs access to wall cavities, ceiling joists, and the attic or crawlspace. In a best case, most of the new wire can be fished through the attic above and crawlspace below without tearing into every wall.
Running new circuits.
New Romex gets pulled through the framing to every outlet, switch, and fixture location. This is also where the layout gets modernized, the electrician isn't just replacing wire, they're redesigning the circuit layout to meet current code.
Timeline and disruption.
a typical 1,200–1,800 sq ft Portland-area home, it's usually 3–5 days of electrical work, plus a couple days for patching. The house is livable during most of it, though individual circuits go offline as they're being replaced.
Practical Changes That Actually Matter
Romex, the current standard for wiring, bundles hot, neutral, and ground conductors inside a plastic sheath, giving you proper fault protection and the capacity to run modern loads safely. Additional benefits include things you can actually experience
Power & Energy Capacity
Moving from the 60 AMPS to 200 AMPS with the new rewire, this leaves room for AC, EV charger, home office, kitchen appliances, washer and dryer.
Insulation Compatibility
Once the K&T is fully disconnected and the house is rewired, you can finally insulate your walls and attic properly without creating a fire hazard which unlocks energy efficiency improvements too.
Home value
A fully rewired home with a modern 200-amp panel in the Portland could be the difference between a $15–25K offer or a price reduction of the same amount.
Safety First: Why Professional Installation Matters
Improper wiring and connections can electrocute utility workers, damage your electrical panel, or cause fires. Our electricians handle grounding, bonding, proper conductor sizing, and code-compliant transfer switch installation — protecting everyone involved.
We handle rewires and panel upgrades together, which saves you the headache of coordinating two contractors and two timelines. We pull our own permits with local jurisdictions across Washington County, Beaverton, Tigard, Hillsboro, and the greater Portland metro. Every job is inspected and closed out to code. If you need an EV charger or generator circuit added down the line, your new panel and wiring will already be ready for it.
Why Choose Nexus Electrical Group?
IBEW Local 48
Licensed, trained union electricians with decades of combined experience
CCB #226988
Oregon licensed electrical contractor — fully bonded and insured
COBID Certified
DBE/MBE/ESB #12161 — Certified diverse business
25+ Years Experience
Real electricians who design, quote, and install your system — not a sales company
We are licensed, bonded, and insured in the state of Oregon. We show up when we say we will, we keep your home clean, and we walk you through every step of the process so nothing feels like a surprise.
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