The two hot prongs are generally found on the left and right side, although sometimes the outlet can be installed sideways or upside down (intentionally or by accident). The neutral wire is in the shape of an L directly across from the ground prong. The ground prong looks like a half-moon sitting on the horizon. The hot prongs are shaped rectangularly each running 120 volts (114-126 volt range). To help you know which prong is which, they are uniquely shaped to help you distinguish the difference. These four prongs in the contemporary plug are made up of two hot prongs (Phase A and Phase B), one neutral wire prong, and one ground wire prong. The modern version (in newer homes) contains four prongs (while the older model only has three). What Does 240 Outlet Look Like? Why So Many Plug Prongs? Why Have A Ground Prong? Unless you have a freak incident where someone happens to drop a butter knife right between this plug gap, you and your home will still be safe if you’ve got the plug version. The hard-wiring does make the appliance slightly safer since there is no opportunity to cause a spark if the plug is not fully plugged into the outlet. To unplug, or change the wiring, you must unbolt the wiring nuts from the appliance. In countless cases, these appliances (most often water heaters, furnaces, and ovens) are hard-wired, meaning you cannot unplug them. 240-volt powered devices include the following home appliances: The first version is what’s currently used in newer homes with an older version that does not have a ground wiring These 240 outlets and their corresponding plugs are much larger than the standard 110 outlets used for most electronic devices. There are two primary types of 240 plugs. For What Electronic Devices Is a 240 Powered Line Used? A house will have two phases of hot wires while also having a neutral (for recycling unused electricity) and a ground wire - in newer homes (for safety reasons). Historically, 240 has been referred to as 220, because the voltage range starts in the two-twenties.īoth phases (A & B) are fed into the house from the streetside power source. Better yet, call an electrician - 1-7to help you safely repair or install electrical components around your home.Ī 240-volt outlet is a power line with two 120 volt lines (Phase A & Phase B) with an acceptable range of voltage from 228 volts to 252. Warning: Before you work on any aspect of your electrical system, make sure you’ve turned the power source off.
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