In 1887, the glow of electric light first reached the streets of Georgetown. That moment marked the beginning of D.C.'s transition from gas lamps to a new era of home energy. Over time, the way electricity is delivered, managed, and used inside D.C. homes has changed dramatically. And understanding that history can help you make better decisions about how to upgrade or maintain your home's electrical system.
Georgetown was one of the first areas in the District to get electrical service. In the late 1880s, arc lighting illuminated main roads. Soon after, incandescent bulbs had become common inside many homes. As the demand for residential electricity grew, so did the infrastructure. Amazingly, some of those early wiring systems are still present in homes today.
If your home was built between the late 1800s and the 1940s, there's a chance it still has some knob-and-tube wiring. This early system utilized porcelain knobs and tubes to guide wires through walls and ceilings. It was standard in its time but is no longer considered up to code for modern use.
Knob-and-tube systems were designed for much lesser power needs, typically around 30 to 60 amps. They lack grounding. As a result, they can't safely support many of today's appliances and electronics.
You might find knob-and-tube wiring:
Another tell: outlets with only two prongs and no grounding slot. If you're not sure what you're looking at, a licensed electrician can confirm it for you.
An older wiring system like knob-and-tube may still function. Even so, it can't support the electrical demands of a modern household. Systems from that era typically offer just 30 to 60 amps of service. Today's homes generally need 100 to 200 amps.
For you, this means limited capacity for kitchen appliances, laundry machines, air conditioning, and smart home devices. Other signs of outdated electrical systems can include flickering lights, frequent tripped breakers, or outlets that feel warm to the touch. These may seem like minor inconveniences, but they're signs that your electrical system may need an update for both performance and peace of mind.
Smart home devices, from thermostats and lights to security systems, can work in older homes, but they need the right electrical foundation. That starts with proper grounding and circuit protection. Upgrading panels, adding GFCI outlets, and replacing old wiring where needed help make your system ready for modern tech.
Smart panels and energy monitors can help you track energy usage in real time to give you a clearer picture of how your home uses power and where it can be more efficient.
You don't have to tear everything out to start modernizing. Many D.C. homeowners take a phased approach. They upgrade key circuits, replace high-use outlets, and gradually move toward a smart-ready home. The key is working with an electrician who understands the wiring history of homes in this area.
Do I need to replace all knob-and-tube wiring?
If it's still active, replacement is usually recommended. In some cases, it may be left in place if it's no longer carrying current and has been safely disconnected.
Will smart home tech work without rewiring?
Not always. Smart devices often require grounded outlets and stable circuits. Older systems don't provide that.
Can I upgrade my panel without rewiring the whole house?
Yes. Upgrading your panel is a great first step. It can support safer, smarter energy use as you update wiring over time.
Understanding your home's electrical past helps you plan a safer, smarter future. If you're not sure what kind of wiring you have, a quick inspection can give you clarity and confidence about your next steps.
D.C. homes are full of charm, history, and hidden electrical quirks. Knowing what kind of wiring you have and how it fits into the story of your home can make all the difference when it comes to planning updates.
Whether you're thinking about upgrading to smart lighting, preparing for a renovation, or just want to know what's behind your light switches, Wilcox Electric offers the experience and care to guide you through every step. Give us a call to learn more about your home's electrical system and what it needs to bring it safely into the modern age.