Holiday lighting season is nearly here, and displays keep getting bigger. Strings of lights, inflatables, projectors, and animated figures all draw power, and they often end up on the same one or two outlets.
A little planning can keep breakers from tripping and cords from overheating. This guide covers how to estimate load, where protection matters, and when to call a licensed electrician for outlets or circuits.
Start With the Labels
Each light string and decoration has a label that lists its wattage or amperage and, for light strings, the maximum number of sets that can be connected together. These limits matter. Exceeding them can overheat wires and plugs. LED strings use much less power than older incandescent ones, so more of them can be connected, but follow the label.
Add up the wattage of what you plan to run on each circuit. A standard 15 amp, 120 volt circuit is designed to carry up to 1,800 watts, but it is generally recommended to keep continuous loads well below that. Remember that other things may be on the same circuit.
Find Out What Shares a Circuit
Outdoor outlets are often fed from a circuit that also serves a garage, a porch, or interior rooms. If you do not know what is on it, test by turning off the breaker and seeing what stops working, or ask an electrician to trace and label the circuit. Knowing this tells you how much room you really have.
Protection and Weather
Outdoor outlets should have ground-fault protection and weatherproof covers. If they do not, a licensed electrician can add them. Plug connections should be kept off the ground and out of snow and puddles. Use lights and cords marked for outdoor use. Timers can reduce the hours that lights run and the energy they use.
- Choose cords rated for the load and the weather.
- Avoid running cords through doors or windows that will be closed on them.
- Keep cords away from gutters, metal railings, and sharp edges.
- Do not use staples or nails on cords, and use clips made for lights.
Trees, Roofs, and Ladders
Ladders and electricity are a risky mix. Keep ladders and long poles far from overhead lines and from the service wire to the house. Do not hang lights on or near power lines, and do not work on a roof in wet or icy conditions. If a display needs a higher or riskier mounting method, ask a professional.
Indoor Trees and Decorations
Check that indoor lights are rated for indoor use, and unplug them when you leave or go to bed. Keep trees watered and away from heat sources. Do not overload power strips, and use ones with a circuit breaker where appropriate. Replace anything with damaged cords or sockets.
When a New Outlet Makes Sense
If you keep running long cords to reach power, or you trip a breaker each year, it may be time for another outdoor outlet or a dedicated circuit. A licensed electrician can add them in places you will actually use them, including at the eaves for hanging lights. See our outlet installation page and our lighting installation page. For commercial properties planning holiday displays, our commercial services page describes our work.
Keep a Spare Kit
It helps to keep a small kit with replacement fuses or bulbs for light strings, a few outdoor-rated cords of different lengths, a portable GFCI, and a plug-in outlet tester. A tester is a low-cost way to check that an outlet is wired correctly and that a ground-fault device trips, though it does not replace an electrician inspection. Store everything together so you are not tempted to improvise in the middle of the season.
If you are ever unsure about a connection, unplug it. Lights are not worth a fire or a shock.
Talk With a Licensed Electrician
Want a safer setup for this season displays? A licensed electrician can add outlets, protection, and circuits that fit your plans.
To discuss your project, visit our contact page or call McDaniel Electrical Construction at (410) 303-8453.