$125 for a Television Wall-Mount Installation from JA Assembly ($250 Value)

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In a Nutshell

Techs travel to homes in order to install clients' TV wall mounts, creating a sleek look that keeps the TV out of the way

The Fine Print

Expires 180 days after purchase. Limit 1 per person, may buy 1 additional as a gift. Limit 1 per visit. Appointment required. TV mount and hardware not included; may be purchased from merchant for an additional fee. In-wall wiring available for an additional fee; contact merchant for details. Valid only within Nassau, Long Island, Manhattan, The Bronx, Staten Island, Queens, & Brooklyn. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

A handyman's job is never done—there's always another squeaky door to fix or hammer to rip from the hands of those who would misuse it. Harness great power with this Groupon.

A handyman's job is never done—there's always another squeaky door to fix or hammer to rip from the hands of those who would misuse it. Harness great power with this Groupon.

The Deal

  • $125 for one television wall-mount installation ($250 value)
  • TV mount and hardware not included.

The Electric Grid: Power to the People, and the Microwaves and TVs

Follow along to learn where electricity is born and how it ends up in your home in the first place.

Depending on where you live, the power coming out of the outlets in your house may have travelled a long way. Energy is transported most efficiently at a high voltage, so if you aren’t close to a source of power, it has probably zipped through the towering power lines often seen cutting across rural areas.

If the massive transmission lines are highways, which then branch into the smaller avenues of neighborhood power lines, then the speed-limit signs at the junctions are transformers. At electric substations, step-up transformers house coils that increase voltage in preparation for the current’s long journey. Farther along the line, step-down transformers—the large, drum-like devices you’ve probably seen mounted on telephone poles—do just the opposite, reducing voltage so that it can be used by buildings and city infrastructure.

In the United States, this system was once an inefficient tangle of 4,000 different providers, each serving separate, disconnected groups of customers. Today, they’ve been unified into three distinct but interconnected grids, serving sectors that can be roughly divided into the east, the west, and Texas. Utility companies across the continent can all use that infrastructure at once, provided they take turns feeding Sparks, the national hamster.

Not only was the grid once a fragmented conglomeration, there was a time when it wasn’t even clear what should pass through it. In the 1880s, inventor Nikola Tesla and his patron George Westinghouse thought it should be alternating current, whose voltage is constantly oscillating and whose current is constantly changing direction; this enables the use of transformers. Thomas Edison, however, had already made a name for himself with the nation’s first, direct-current grids, which required a power plant and large monument to Thomas Edison about every mile. In attempts to prove that alternating current was too dangerous for widespread use, Edison pulled stunts such as using alternating current to publicly electrocute an elephant. Although alternating current’s advantages won out, remnants of direct-current grids remained in operation into the early 21st century.


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