Knob and Tube Wiring Upgrade Los Angeles

Knob and tube wiring consists of insulated copper wires that run through porcelain insulating tubes, supported by nailed-down porcelain knobs. Where they enter an electrical device, such as an outlet or light fixture, these wires are protected by a flexible cloth or rubber insulation. Learn about safety concerns and how Express Electrical can assist with rewiring old homes and upgrading knob and tube wiring in Los Angeles.

Knob and tube wiring doesn’t always pose an imminent danger, but it may pose significant safety concerns under certain conditions. Although this type of electrical wiring was once a standard method from about 1880 to the 1940s, electrical codes now deem knob and tube obsolete. In Los Angeles, where many people still live in character homes, it’s important for residents to understand their electrical systems, the risks associated with outdated components, and to ensure they’re code-compliant. 

Electrical fire hazard

Knob and tube wiring is susceptible to overheating. Proximity to insulation is a significant concern since this wiring is meant to have space to dissipate excess heat — with insulation around the wires, they’re more likely to overheat and cause a fire.

Insufficient grounding

Knob and tube systems don’t have grounding conductors to protect against electrical surges. It’s therefore incompatible with modern three-prong devices and appliances, increasing the risk of damaged equipment, electrical shock, and fire.

Improper modifications

Since knob and tube wiring isn’t compatible with most modern devices, it’s become known for modifications in an attempt to accommodate amperage loads. Often completed by an untrained handyperson rather than a licensed electrician, many of these modifications are poorly executed and increase the risk of overheating.

Insurance challenges

Unless an electrician verifies the system’s safety, insurance companies often refuse to insure homes with knob and tube wiring because of increased fire risk. Even so, homeowners with knob and tube wiring may have higher premiums.

With proper modifications and maintenance, knob and tube wiring isn’t inherently unsafe. If you notice these signs, however, your knob and tube wiring may need an upgrade:

• Frequent circuit breaker trips: Occasional circuit breaker trips are normal. Persistent tripping suggests your electrical system is overloaded, under-equipped for your home’s current needs, and at risk of overheating.

• Flickering lights: Flickering lights are often a sign of loose or damaged wiring.

• Burning smells or discoloration: Scorch marks, burning smells, warm spots on your outlets or walls, and similar signs indicate overheating and require immediate attention.

• Frayed wires: Knob and tube wiring may be vulnerable to rodent damage or accelerated wear. Call an electrician if you find frayed or brittle wires.

At Express Electrical, you can rely on our team of licensed electricians to safely and efficiently upgrade your home’s knob and tube wiring to a modern system.

We’ll start with a comprehensive inspection of your home and its existing wiring, assessing its condition and identifying immediate risks. Based on our inspection, we’ll tailor repair and upgrade recommendations, provide an upfront estimate, and assist with permit applications as needed.

Knob and tube upgrade options may include:

• Replacing standard outlets with ground fault circuit interrupter outlets to add a layer of protection against surges and ground faults.
• Identifying and replacing cracked, brittle, or worn wiring.
• Rewiring high-risk areas, such as kitchens, bathrooms, laundry rooms, or other areas with high-amperage devices or exposure to moisture.
• Rewiring and upgrading your whole home if needed.

Upgrading your knob and tube wiring offers numerous advantages, including:

• Safety: Upgrading an outdated electrical system means reducing the risk of electrical fires and creating a safer environment for your household.

• Compatibility: With a modern electrical system, you may use appliances and devices without concern for overloading circuits.

• Energy efficiency: Modern wiring handles high electrical loads more efficiently, potentially leading to energy savings.

• Home value: By removing knob and tube wiring and its challenges, appraisers are more likely to give your home a higher valuation.

Serving Los Angeles County since 1982, Express Electrical is known for providing comprehensive electrical services with high-quality workmanship. Our commitment to exceptional service has resulted in numerous positive reviews from satisfied customers throughout LA.

Our electricians are not only skilled but also prioritize safety with every service. Each upgrade or repair complies with the electrical code and local regulations.

Knob and tube replacement is an important part of ensuring your home’s safety and reliability. With Express Electrical, enjoy prompt and professional service whether for knob and tube replacement or other electrical upgrades. Contact us today or schedule a service online.