Loose plugs, a switch that buzzes, or a kitchen counter with one tired outlet behind the toaster — that’s the bread-and-butter work David Williams Electric handles every week across Montgomery County. From the two-prong receptacles in a 1950s Silver Spring brick rambler to the smart-switch retrofit a new Clarksburg townhome owner wants, the job gets done right, to current Maryland code, with the price agreed before any work starts. One licensed electrician (Maryland #11734), 30-plus years on the tools, and a 100% satisfaction guarantee behind it.
What we replace, add, and upgrade
Most calls fall into a handful of buckets: a receptacle that no longer grips a plug, a three-way switch at the top and bottom of the stairs that quit working, a dead outlet on a kitchen wall, or a homeowner who wants USB-A/USB-C charging built into the wall so the nightstand stops looking like a power strip exploded. We add new outlets where the floor plan never put one — behind a wall-mounted TV in a Bethesda family room, on a Potomac kitchen island, in a Gaithersburg garage workbench corner — and we swap worn 15- and 20-amp devices that have been cycled for 30 years.
Smart switches are the fastest-growing request, and there’s a catch worth knowing before you buy one: most Wi-Fi and Z-Wave dimmers need a neutral wire in the box. Plenty of older Montgomery County homes were wired with switch loops that don’t have one. We check the box first, tell you whether your chosen switch will work, and if it won’t, we either pull a neutral or point you to a no-neutral-required model instead of leaving you with a $50 switch that blinks and won’t hold a setting.
GFCI and AFCI: where Maryland code now requires them
A GFCI (the outlet with the TEST and RESET buttons) shuts power off in a fraction of a second when current leaks to ground — the difference between a startle and a hospital trip when a hairdryer hits the sink. Maryland’s adopted electrical code calls for GFCI protection at kitchen counters, bathrooms, garages, unfinished basements, laundry areas, and every exterior receptacle. AFCI breakers, which catch the kind of arcing that starts fires inside a wall, are required on most living-area circuits.
In the older housing stock around Silver Spring, Takoma Park’s edges, and downtown Bethesda, we still find plenty of two-prong ungrounded outlets from the 1940s and ’50s. There’s a correct, code-compliant way to handle those without ripping open plaster: a GFCI on an ungrounded circuit, labeled “No Equipment Ground,” gives you a safe three-prong outlet legally. We do it the right way, not the duct-tape way.
Aluminum branch wiring — the upcounty and 1960s-70s issue
If your house was built or rewired roughly between 1965 and 1973 — a band that catches a lot of Wheaton, Rockville, and Aspen Hill homes — there’s a real chance the 15- and 20-amp branch circuits are aluminum, not copper. Aluminum expands, contracts, and oxidizes differently than copper, and over decades the connections at outlets and switches loosen and overheat. Warm cover plates, flickering, or a faint hot-plastic smell at a receptacle are the warning signs.
The accepted repair is to pigtail a short length of copper onto the aluminum at every device using a connector rated for the job — we use ALUMACONN connectors with the correct anti-oxidant and torque — so the device itself only ever sees copper. It’s meticulous, box-by-box work, and it’s exactly the kind of thing a licensed electrician should be doing rather than a handyman with a wire nut. We’ll walk the house, tell you what we find, and price it before we touch a screw.
Permits, inspections, and the up-front price
A straight like-for-like device swap is routine maintenance. But when we add circuits, relocate outlets, or do panel-fed work, Montgomery County’s Department of Permitting Services in Rockville requires an electrical permit and a county inspection — and that’s a good thing, because it means a second set of eyes confirms the work is safe. We handle that paperwork and meet the inspector so you don’t have to take a day off to chase a sign-off.
Either way, you get the number before the work begins. No hourly meter running while you watch, no surprise line items on the invoice. That up-front pricing, plus a 100% satisfaction guarantee, is how David Williams Electric has kept Montgomery County homeowners calling back for more than three decades.
Frequently Asked Questions
Can you make my old two-prong outlets safe without rewiring the whole house?
Usually, yes. In older Silver Spring and Bethesda homes with ungrounded two-prong wiring, we can install a GFCI device and label the downstream outlets "No Equipment Ground." That gives you legal, code-compliant three-prong outlets with shock protection — no plaster demolition required. If you'd rather have true grounded circuits, we'll price that option too.
I bought a smart dimmer and it won't work. Can you fix it?
Most likely it needs a neutral wire that your switch box doesn't have — common in older Montgomery County homes wired with switch loops. We check the box, and either pull a neutral or swap your switch for a no-neutral-required model. Bring us the switch you bought before you assume it's defective.
My outlet cover plate feels warm. Is that an emergency?
Treat it as urgent. A warm receptacle or switch — especially in a Rockville, Wheaton, or Aspen Hill home from the late '60s or early '70s — can mean a loosened aluminum connection that's heating up. Stop using that outlet and call. We'll inspect it and, if it's aluminum branch wiring, pigtail copper onto the connections with ALUMACONN connectors to make it safe.
Do I need a permit to add an outlet?
For a simple device replacement, no. For adding a new circuit or relocating an outlet, Montgomery County DPS in Rockville requires an electrical permit and inspection. We pull the permit and meet the inspector as part of the job, so you're never left handling county paperwork on your own.
How do you charge — is it by the hour?
No. We give you an up-front price for the work before we start, so you know the cost going in. Every job is backed by a 100% satisfaction guarantee and done by a licensed Maryland electrician (license #11734) with 30-plus years of experience.
Serving Montgomery County
David Williams Electric provides receptacles & switches throughout Montgomery County, including Rockville, Bethesda, Silver Spring, Gaithersburg, Germantown, Potomac, Olney. Explore all Montgomery County electrical services or learn more about receptacles & switches across Maryland. Call (410) 781-4357 for a free, up-front quote.
