This will depend on how your RV or travel trailer is wired. This brings up an interesting topic of what adapters to use. That means that you will have to have a plug that matches that receptacle to get the power to your RV or trailer. The standard plug for most RVs and travel trailers will be the TT-30. If the campground does both is often a rare exception if they do it at all. When you pull into a campground, you will find that the campground may be 50-amp or 30-amp only. Making a mistake can only be fixed by going back to the store and making an exchange for the right options. This just means that you cannot be in a hurry when looking for either the plug or the outlet. Even the uncommon options will have their own special outlet to plug into. They will have a similar NEMA number to help you identify them. There will be as many receptacle designs as there are plugs. It is very simple to do and should only be a matter of seconds to get the right outlet. In other words, to find the right receptacle you just match the prongs to the holes and you got the right one. They can only plug into the one that looks like the prong side of the plug. This is a simple match to make as you cannot plug the wrong plug into the wrong outlet. The word receptacle simply means the outlet you need to plug the plug into. But how those prongs are arranged is another matter. It is mainly for 110 or 120 outlets and you only need a hot, neutral, and ground wire to make the plug work in a 120 outlet. Know what you are looking for so your search for a replacement goes smoother. There is also a 20-amp dryer plug on the market so be careful how you phrase your request. Then add the word 30 to your phrase to make sure you get a 30 amp option and not a 50 amp one.

You may have to use an extra word, like dryer plug to get close to the exact plug you need. The L stands for locking as the TT stands for travel trailer. Individual plugs may have special labels, like the TT-30 above, but that is because they have a special use. A 30-amp plug is called a 30-amp plug as any other name would confuse the world and make it more difficult for people to find what they are looking for. There is no special name for these plugs. They should get you on the right track to finding the right replacement. Talk to your electrical expert and see what all the plugs are and what they are for. These are not all the 30-amp plugs you can buy but they are the most common ones you would encounter. L6-30 (locking 240 volt 30amp) Twist-Lock 30A 240 volt outlet, easy to find in stores, works great for adding adapters to portables EVSE’s equipped with a L6-30 plug ( source) TT-30 (Travel Trailer 30amp) 30A 120-volt 3-prong outlet, the older style found in RV parks, not used in residential homes. 14-30 standard 30A 240 volt 4-prong Dryer outlet found in homes built in 1996 and newer 10-30 standard 30A 240 volt 3-prong Dryer outlet found in homes built before 1996 Here is a brief list of those different plugs and their use: Are There Different Types Of 30 Amp RV Plugs?

The plug you need for your travel trailer should be marked TT-30 and this is for those older campgrounds using an older electrical system that has been in place for a very long time. You need to take a few minutes to examine the prongs and see if they will work for your intended use. This means you just can’t walk into an outlet selling electrical parts and just pick up one and go home. Those dryer plugs can be for either 240 or 120 volts. The one you buy will depend on the make and model of the dryer. 3 were for a welder or plasma cutter (or similar work tools). They all have different purposes and they can be for either 240 or 120 power.ģ of those plugs were for your RV or travel trailer.

On one chart we saw about 8 differently designed 30-amp plugs.

115 volt plug configuration