Getting power to a Halloween yard display

The budget you are working inside

The convention is the same one that governs any display: 80 percent of the breaker rating for a load running three hours or more. Everything else already on that circuit — and an exterior outlet is frequently shared with a garage or a bathroom — comes out of the same number.

The cord is the part people get wrong

Gauge is a capacity rating, and a lower number is a heavier wire. This is the decision that determines whether the far end of a long run has enough to work with.

Run one heavy cord out to where the display is, then distribute locally. Do not daisy-chain three light cords across a lawn: every joint is a connection sitting in wet grass, and the whole display is downstream of the weakest one. The full gauge argument, including why 16 AWG is fine for one string and wrong for a display, is on our cord comparison.

Where the daisy chain should end

A stake outlet is the piece that turns one cord into a distribution point at the display rather than a chain of couplers across the grass. Both of the ones we rank publish six grounded outlets with a built-in lead and photocell control.

The difference between them is what they publish about safety. The TiFFCOFiO stake states an ETL listing and a waterproof six-foot lead; the SURAIELEC stake publishes the same six outlets and a 100-foot remote but is less forthcoming about its listing. For a unit that will sit in wet grass carrying most of a display, the stated listing is worth more than the extra feature. That preference runs through our whole timer ranking.

Scheduling, and why it matters more here

A blower running dusk to dawn for a month is a motor running roughly 14 hours a night for nobody, and it is the single largest avoidable draw in a Halloween display. A dusk-to-dawn timer with a 15 A / 1/2 HP ETL-listed rating across two grounded weatherproof outlets is the simplest fix; the 1/2 HP rating matters here specifically because it is a motor rating, and a blower is a motor rather than a resistive load.

Weather, and where the connections sit

Every connection in a yard display is outdoors for a month in autumn weather. Keep couplers off the ground, use a drip loop so water runs away from the joint rather than into it, and use outdoor-rated cord for every part of the run rather than one indoor cord for the last few feet.

None of that is a substitute for the protection your circuit already has or does not have. We are not electricians and this page is arithmetic and product specification, not an inspection of your wiring. Follow local code, and if the display is large enough that you are counting watts against a budget, that is the point at which asking a professional is the cheap option. The full circuit treatment is on how many amps Christmas lights use, and the same load calculator works for a Halloween display — run your numbers through it.