![]() Some small appliances are still made to support a 2 prong arrangement but are safely usable in 3 prong outlets. Most of the times you will discover the 3 prong plug unless you have an electrical structure laid out before 1960 or have particularly manufactured a fitting for 2 prong. It is the grounded connector where you have a hot and neutral wire and for a 3 prong an additional ground wire. Note that the duplex plug is the common 2 or 3 pronged plug that's used extensively in households and these plugs are NEMA 1 (15 Amp only) and NEMA 5 respectively. In single phase, like family unit and common household appliances, and at the 120V/125V and 240V/250V territories you'll be considering the NEMA 1 for 2 prong and NEMA 5, 6, and 10, for 3 prongs and 14 for 4 prong.ĭuplex Outlet and Plug – Non Locking/Twist (NEMA 5) It’s imperative because a 20 Amp receptacle and a 30 Amp plugwon't have precisely the same prong configuration for any NEMA L type. For RV or Travel Trailer applications, some give TT-30 plug.Īt the time of purchasing electrical cords and plugs/receptacles, ensure that the rating and type are compatible. Commonly, generators give the 20 and 30 Amp ratings and use no less than one locking plug generally a L5, L10, or L14 with a couple for standard duplex plugs. Now, let's take a look at the common plugs that can be used with generators. Locking prong, no L is a straight prong and plugs can be pulled out easily.TT in this case means travel trailer and is used for RVsĪfter the hyphen it is the amperage rating (electricity current) National Electrical Manufacturers Association It’s fairly easy to understand the designations. ![]() Moreover, they are grouped by single phase or three phase but with common generators we are most concerned with single phase which limits to what extent we really have to know about receptacles and plugs. The common plugs are rated for 125 V to 600 V and 15 Amps to 60 Amps. NEMA code helps in preventing hazardous combinations of amperage and voltage that can result in short circuits, electrocution, electrical fires and more. These codes were standardized for plugs and receptacles so it becomes easier for consumers to differentiate between variety of configurations of voltages and amperages. When you buy a new plug or receptacle it has a National Electrical Manufacturers Association (NEMA) code on it. *Voltage is more or less a measure of "force" pushing charge through something, it's sort of analogous to the pressure pushing water through the pipe. As a rule of thumb, if the plug has the same amperage rating it should yield the similar amount of wattage. You can compare the amperage rating of your plug to the rating mentioned in the NEMA code written on the replacement plug. Generally plugs are rated between the range of 240 and 1,800 watts for a 120 Volt 15 Amp circuit, the maximum wattage of a 15 Amp circuit is 1,800 watts. ![]() If you've doubts about the amperage rating of the plug, use the following pointers to determine the rating: You can figure out the wattage of any electrical appliance by multiplying its voltage with the amperage rating. Wattage is the amount of electrical power that your generator or any other electrical appliance consumes. This is important because the amperage rating directly contributes towards wattage production. It's sort of analogous to how much water is flowing through a pipe.* When you're looking to buy a new replacement plug, ensure that it has the same amperage rating as the old plug.
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