Best buy mac charger extension cord
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We recommend skipping indoor/outdoor extension cords rated for 10 A or 13 A. If you’re confused by the relationship between length and cord thickness, at least look for the amperage rating on the packaging. Look for the numbers in the table above when you’re trying to decide which cord is right for you. A cord measuring 14 AWG is the thinnest we recommend-and at lengths of only 25 feet or shorter-and the much thicker 10 AWG is likely the thickest gauge you’ll find in an extension cord. Larger numbers mean smaller wires, which in turn means it can carry less power. Recommended wire gauge for extension cords Cord lengthĬord thickness in the US is generally listed in terms of gauge, or AWG. But the minimum won’t do if you want to run power tools like drills, saws, or wet/dry vacs safely and at peak power. Any cord at a big-box store should meet the minimum requirements to run low-power gear like lights, battery chargers, or a stereo (see chart below). Thicker wires can carry more power over longer distances. Thicker cords can carry more powerĪside from length, the thickness of the wires inside an extension cord dictate how much power it can safely carry. The extra resistance of daisy-chaining cords can also cause additional heat to build up along the way, increasing the risk of one of the cords melting or even starting a fire.Įven if you’d normally ignore the safety risks and grab the cheaper, shorter cord, there’s another practical reason to get a longer cord: A long cord means you’re less likely to need to buy another extension cord for your next project.
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Added resistance can in turn cause voltage drops that will make equipment like drills, saws, and vacuums run at lower power. The extra length of multiple cords plugged in to each other (without thicker wires to make up for the distance) adds electrical resistance between the outlet and the thing you’re trying to power. That’s because you’re not supposed to daisy-chain extension cords, connecting one to another. Not only is a longer cord more convenient-it’s annoying to just barely reach your work area-but it’s safer too. When you’re guessing how long of an extension cord you need, leave yourself extra room for error and buy the next longest cord. If you’re looking for an indoor cord just to extend your phone charger or plug in a lamp, the guidelines are a little different. If you’re going to have only one cord, focus on indoor/outdoor extension cords-generally the ones in bright colors-and follow the tips laid out here to snag the best cord among the limited options in the store. But that’s not particularly helpful advice if you’re in the middle of a project and need an extension cord right now. If you can wait a day or two for shipping, buying online is the way to go. The extension cords you’ll find for sale online are better quality and cost less than the ones generally stocked at brick-and-mortar hardware stores.