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Epicord 30 Amp Twist Lock Power Inlet - Black

Epicord 30 Amp Twist Lock Power Inlet - Black

Item # 277-000138
Our Price: $37.45
RV Power Inlets
Shipping Weight: 0.49 lbs
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277-000138 - Black Epicord Power Inlets
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Great Prices for the best rv power inlets from Epicord. Epicord 30 Amp Twist Lock Power Inlet - Black part number 277-000138 can be ordered online at or call 1-800-940-8924 for expert service.
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Epicord RV Power Inlets - 277-000138

  • 30 Amp Twist Lock Male Plug
  • Black
  • Power Inlets
  • Epicord
  • Square

  • Epicord standard twist lock power inlet
  • Robust construction and corrosion-resistant materials
  • UV stabilized glass-filled polyester
  • Black face plate
  • Plug: NEMA L5-30R
  • Amperage: 30
  • Voltage: 125
  • cETL and ETLus Listing
  • Requires hardwiring
  • Hardware not included
  • 1-Year warranty


RV060B Epicord 30A Twist Lock Power Inlet - Black


Video of Epicord 30 Amp Twist Lock Power Inlet - Black

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Epicord 30 Amp Twist Lock Power Inlet Installation - 2018 Nissan NV 2500

Shane: Hi. I'm Shane with Today we're going to be taking a look at and I'm going to walk you through the installation on the Epicord 30 Amp Twist Lock Power Inlet on our 2013 Nissan NV 2500.Now, this is going to be great for getting your vehicle 30 amps of power or 125 volts. Like a lot of people are doing nowadays, they're taking vans like this then they're turning them into their own camper, so they can design them the way they want. A plug like this is going to allow you to run your lighting, run your refrigerator, run your air conditioner if you add one one, which generators, a lot of generators aren't going to be able to do. Or maybe you're like our customer here and they're starting a mobile grooming company for animals, or for dogs.

This is going to allow them to run their water pumps and their vacuum.Our plug's going to have a nice cover that's going to help protect all of our connections from any dirt and debris. It's going to have a seal right inside it. It's actually just like a piece of foam. It seals right around this edge. It's going to help keep any moisture or anything like that from getting in.

You can hear it kind of snaps into place, so it stays closed when you're not using it.It's going to work with your standard three-prong plug, RV plug, that has the twist cap or twist ring on it. You're going to stick it on, twist it, and then you turn the ring and it actually locks that plug into place.A great addition to this or the plug itself would be the Mighty Cord 90-Degree RV Power Cord Adapter. It's going to be 30 amp female side on one side that's going to hook in here and it's going to come down 90 degrees, so you're not putting pressure down on this edge. Then on the other end, you can hook just a regular plug into it and hook it into your house wall outlet. Maybe you have a small refrigerator or something inside that you want to keep cool or cool it off overnight, you have it parked in your driveway, you hook it up, add that adapter on, and hook that cord up to your wall outlet at home, you can have your refrigerator running all night long.Now I'm going to go over some of the features and show you how to get it installed.

First thing you're going to do is determine where you're going to put it. You can see our customer wants it right in this area. Before we start drilling it or cutting the hole in the side of the vehicle, we need to check on the inside to make sure we're not going to be hitting any wiring or anything like that.Our customer already has a panel up here, so what I did is I pulled it back and there's a large opening there. They had filled it with insulation, so what I did is I pulled the insulation out. Now, I know I'm clear.

I'm going to go ahead and drill my hole in the outside and then I'll come in here and I'll drill a small hole just big enough that I can fit my wiring in that's going to go to the plug.The 2-7/8 hole saw bit is not a common one, so you are probably going to have to special order it. There is not a lot of stores that are going to carry it. Now we're going to start drilling our hole. I'm actually going to move it up just a little bit, right at about the corner where they have it marked here.I'm going to take a file. I'm going to knock down all the burrs. Then you can either spray it with maybe clear coat or something. You just want to make sure you cover that bare metal. I'm actually going to use a paint marker. This is all going to be covered up by the plug, so we're not going to see any of it. Just want to make sure if by chance any water or anything like that gets in there, it just keeps it from corroding.Next thing I'm going to do is I need to mark out four of my screw holes. The directions tell you to use #8 stainless steel screws. What I'm going to do is I'm actually going to use a #8 stainless steel bolt, a pan head bolt, and a lock washer and nut on the back side. Now, all we're doing is installing the plug.If you are adding the wiring onto it now, what you want to do is you want to pull your wiring through the hole. You're going to take this cap off. You're going to feed . You're actually going to put your cap, this cap here, on your wiring, feed your wiring through here. It's going to come out here, and then you're going to wire it to the back of your plug. You're going to take this cap. You'll tighten this down, and that'll lock your wires in place. Then you can bolt it to the side wall of the vehicle.Because my customer has not ran any of their wiring yet, they're going to wire it their self, and we're only putting the plug on for them, we're going to go ahead and mark our holes, drill our holes, and put the nut and the bolt in. 1/8" drill bit. Now your nuts and bolts, or your screws, actually, do not come with the plug, so this is something you will have to pick up.Now, I'll pull this back off. Again, I'm going to take my paint marker and cover up that bare metal. Again, we're not wiring our plug, we're just pre-installing the plug for now. It's a good idea, if you have your wiring ran, to go ahead and install it onto the plug before putting your plug or mounting your plug to the wall, because that plug has to be off, the twist lock has to be off, in order to get your wiring through, and it's all on the outside.Again, I'm Shane with I hope this video has helped you, whether you're still deciding on the plug or installing it on your 2018 Nissan NV 2500.

Customer Satisfaction Score:

Customer Reviews

Epicord 30 Amp Twist Lock Power Inlet - Black - 277-000138

Average Customer Rating:  4.7 out of 5 stars   (90 Customer Reviews)


etrailer made it very easy to order and got my product in the time frame I was told. Haven’t installed the power inlet yet but I’m very confident it will work.


The original connector was not installed properly by the manufacturer. The wires were pushed into the connector, but the screws were not tightened. The hot lead became very “HOT” and melted the pins out of the plastic. I replaced the connector with this new one. It fit in the same place as the original. I tightened the screws and have had no problems since.

Phil F.


I have not had any problems with this or any products I have purchased from!!!


Worked like a charm! I purchased this to put a plug on my enclosed trailer that I was wiring for electric (toy hauler set up). A couple of things to keep in mind for those of you looking to do the same. The sheet metal on our enclosed trailers is much to thin to mount this plug to without some back up support. The plug itself is built sturdy enough, but our sheet metal is too thin and weak. I removed the plywood backing and welded up a steel frame with some heavy gauge sheet metal in the middle and bolted the whole support structure to the trailer studs. Then put the plywood back on and cut the hole in the side of the trailer with a hole saw bit and went through the sheet metal of the trailer, my added support sheet metal, and the plywood of the interior. Worked great. Then used self taping screws to hold the plug to the support sheet metal. That bad girl is not moving anytime soon. A couple words of caution, I would plan to use some silicone around the plug after installation. If you are like me and are removing the plug several times while wiring/cutting, you may damage the small gasket that is provided. Just to be safe a quick bead of silicone around the housing and now we covered all of the basis. One more quick tip. Don't be an idiot like me...perhaps it was all of the welding fumes from making my support bracket, or the half dozen beers I had drank during this part of the project, but for some reason I thought it would be a great idea to remove the inner part of the plug from the black housing to wire it together. DO NOT DO THIS. Cost me about 3 min of scratching my head trying to get the bad girl back together. Long story, but the message is simple, there is no need to remove any screws from this plug to install your wires. There are little windows in the back of the plug that allow you to very easily slide your screw driver into and tighten down on your wire. Also, the back of the plug is color coded to help in knowing which wires need to go to which turn lock pins.

Sorry for the long review. To recap, this product was perfect and arrived 3 days after I hit the "purchase" button. Couldn't be more happy. Thanks, etrailer!


This is the second item I have purchased from and I can say, that both of my experiences have been Five Star. The items were exactly as they described (I must also add that etrailer gives clear and detailed information which makes it easier to make a decision with confidence). Also they excel in prompt delivery and communications as to when to expect receipt of the item (in the case of both items I ordered, they both were delivered as indicated by etrailer.

These are certainly qualities which are easy to refer to in making a review, however, there is one more which I am really impressed with and one which allows me to understand why they garner an excellent review from me. When I opened my box, on the inside flap of the carton, is a statement from The statement says it all - "The bottom of this box should not be the end of our relationship. If we can help, let us know", and then they list a phone number and email address. This underscores their commitment to a great business relationship which results in a satisfied repeat customer. I will continue this relationship.


Very well made worker well with no prob lems


Not quite the quality materials of the high priced outlets, but perfectly functional for my van conversion project.


Good product, functions fine door/cover still latching fine and tight.
Do not follow directions regarding hole size to drill. Recommended size is way bigger than it needs to be.

Etrailer Expert

Jenny N.


Thank you for your feedback. The outer diameter of the socket that mounts in the RV all is 2 78 inches. If you wanted to be precise, you could use a 2 78 hole saw and grind down the edges for a snug fit however I would make sure that there is a small gap for the movement of the trailer or RV wall when driving.


This 30 Amp inlet does its job. The wiring directions were clear once we got over hole sawing through our new van.

Fred S.


The inlet continues to work great. We need to remember to close it firmly.


Kyle is great to work with , am making them my 1 st call for all things trailer





A perfect replacement for my old travel trailer. Great quality and easy to install, but make sure you have the right extension cord that fits with this or else you will be disappointed !


Part received as promised and was the same as noted on the website. Did note during the installation that base was a fraction smaller than the original part but no problem. Suggest adding mounting screws and gasket as a kit!


Seems to be a sturdy product for a good price. The hinge and contacts look strong. Requires a 2-1/2-inch hole saw for installation (if my memory serves me). Could use a waterproofing gasket, but some butyl tape will fix that. Good product!


Great prices, good products


Have had this plug over a year now no issues what so ever easy install no leaks or cracks in it



Still works great no issues great plug


Great Product, made well and is working just fine.
Would purchase again, wait we did purchase a second one for another application.......
etrailer always seams to have a quality product, you really do get what you pay for!


Nice product. I bought a pair, one black, one white. While the product is nice, it's etrailer that makes the difference

Finding a piece-part like this can be a challenge. I'm an engineer and know how to do it and it's hard to plow through mfg catalogs specifying a part number among dozens of options. Even then it's hard to buy just one. OEMs and distributed want to quote a hundred or a thousand.

etrailer has done all that work, has it in stock, with helpful people and complete info in easy to understand language.

Good part, good price, in stock and delivered on time.


Exactly what I was looking for in my cargo trailer conversion project. Worked like a charm


Product is exactly as advertised, simple installation. Had to use 3" hole saw as finding the requested 2 7/8" seems impossible. 3" works just fine. No issues to date.


Functional RV plug
Far superior than
the one [online retailer] carries primarily due to the seal created where the 3 wire cable passes into the plug assembly
Immediate delivery from etrailer, [online retailer] is 3-4 weeks out for there’s.


Purchase to install 30 amp power in an enclosed cargo trailer. Product was perfect for the project and 1/3 of the price I could source locally. Super Fast Shipping as well,


I needed the face plate and insulation washer, and they were interchangable, so I bought the 30amp plug to use the cover on my 50amp. Perfect fit


I received the Epicord 30A power inlet promptly despite Hurricane Matthew passing by 40 miles east of my house and disrupting life in general not to mention everyday deliveries. The product is as described and I'll install it as soon as I put my screened porch back together!


Fit perfectly


Order received ahead of schedule. Great service.


Should work, has gasket but no mounting screws. That's ok as I'll use SS screws.

Show More Reviews

See what our Experts say about this Epicord RV Power Inlets

  • What Size Hole Saw is Used to Install the Epicord 30 Amp Twist Lock Power Inlet
    If you have a typical hole saw set, then you will want to use a 3" hole saw on the Epicord 30 Amp Twist Lock Power Inlet, # 277-000138. The outer diameter of the socket that mounts in the RV wall is 2-7/8 inches. If you wanted to be very precise, you could use a 2-7/8 inch hole saw and grind down the edges for a snug fit, but I would make sure there is a small gap for the movement of the trailer or RV wall when driving.
    view full answer...
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  • Socket Recommendation for Outside of Cargo Trailer to Run 30 AMP Power to Trailer
    If the campgrounds you plan to visit will have 30 amp power sources the Epicord 30 Amp Twist Lock Power Inlet # 277-000138 that you mentioned would be the correct product to install on your trailer.
    view full answer...
  • How Does Wire Attach to Epicord 30 Amp Twist Lock Inlet part # 277-000138
    If you remove the white casing of the Epicord 30 Amp Twist Lock Inlet part # 277-000138 you will see where wires can attach to the back of the socket. Each of the pins has a set screw that you would use to tighten the wire. Basically you would insert stripped back wire into each pin and then use the set screws to secure them there.
    view full answer...
  • Measurements of Epicord 30 Amp Twist Lock Power Inlet - Black Item # 277-000138
    I went out to the warehouse and measured Epicord 30 Amp Twist Lock Power Inlet - Black Item # 277-000138 for you. The overall width is 3-1/4 inches. the overall height (lid closed) is 4 inches or 7-1/2 inches with the lid opened straight up. The overall depth is 3-3/16 inches. I have included pictures showing these and other measurements for you.
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  • 30 Amp Furion Shore Power Inlet Replacement for Micro Minnie
    Yes the Furrion RV power inlet part # 431861 that you referenced is an exact replacement for what you have on your 2017 Winnebago Micro Minnie 2106DS. We don't have a black Furrion but we have a similar black one from Epicord with # 277-000138 which would work too.
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  • Largest Twist Lock 30 Amp Male Inlet for RV
    The largest 30 amp male twist inlet is the part # 431861 which is overall 3-1/2 inch by 3-1/2 inch. The hole behind our current access door might actually be smaller though than what you mentioned so maybe take it off and see how big of a hole you have to work with.
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  • AC Distribution Panel for Multiple Outlets in Enclosed Trailer
    What you are going to need is the AC Distribution Panel # PD5500. This panel will allow you to do exactly what you are needing to safely run outlets to different locations inside your enclosed trailer. This panel measures 11.7" wide x 9.2" high x 4.1" deep and requires a cutout size of 10.5" wide x 7.5" high.
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  • Is 30 Amp RV Outlet Rated for 250 Volts
    30 amp outlets for RV use like the part # 277-000138 are not for 250 volt as they are for only 120. To get the 250 volt rating you'd need to go up to the 50 amp service like the outlet # F52INSBS.
    view full answer...
  • Components Needed To Add Power To A 2012 Sundowner Horse Trailer Living Quarters
    You'll need to install a power center that converts AC power to DC and distributes the energy to your appliances. To find the correct size converter you'll need to look at the amp hour rating of your battery(ies). The amperage of the converter needs to be at least 10% of the total battery amp hours. For example, if you had a 200 amp hour rating you would need at minimum a 20 amp converter charger. Typically most RV's have a 35-60 amp rated converter so the Progressive Dynamics Mighty...
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  • Recommended 30-Amp Components For Trailer
    We do not offer a kit for a 30 amp circuit as you requested but we do have the items you mentioned as separate items I have attached a link to our product page for the 30 amp items we offer. For a power inlet I recommend part # 277-000138. For a power cord I recommend part # A10-3025E.
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  • Power Inlet Availability for Cruiser RV
    We have a few different styles of power inlets for RVs. The part # A10-50INBKVP that you referenced is a 50 amp style connector. The other style is a 30 amp like part # 277-000138. This is the more popular style so it would probably be what you'd need. But you'd need to first determine the amperage draw needed for your trailer.
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  • SurgeGuard Shows Open Ground with Parallel Generators is There a Bypass
    Since your generators already have the inverters built in there is no need to run them through the surge protector. So adding a secong 30 amp connector to your camper that ties in to the electrical system after the surge protector would be a great solution. To do this you can use the Epicord 30 Amp Twist Lock Power Inlet part # 277-000137 which is white or the black option part # 277-000138. This with a short length of wiring will allow the connection. This connection should be made before...
    view full answer...
  • What Inlet and Plug do I Need to Install an Air Conditioner on My Enclosed Trailer?
    As far as the inlet plug you need to run your air conditioner unit, you will first need to install the Epicord 30 Amp Twist Lock Power Inlet - Black # 277-000138. Once the inlet is installed, you will be able to use a 30-amp plug like the Mighty Cord RV Power Cord - 30 Amps - 25' Long # A10-3025ED. You will then be able to connect those components to a 30-amp shore power source. I went ahead and attached a video of the installation of the inlet if you need help.
    view full answer...
  • How To Hook Up an Enclosed Trailer with Electric Lights and Outlets
    I do have some parts for you but we aren't custom trailer builders and adding electric to a trailer is not a simple task. What I can tell you is that most interior lights are 12 volt so if you want outlets, lights, and shore power you'd need both 12V DC and 110/120V AC. In order to to do this you'll first need to start with a panel like the Progressive Dynamics RV Power Control Center with AC/DC Panel and Converter/Smart Charger part # PD4135K. This is the main unit that you will run the...
    view full answer...
  • Operation of AC Unit and Other Outlet From 2000 Watt Portable Generator
    We don't carry any 20 amp power inlets. I recommend you upgrade to the Epicord 30 Amp Twist Lock Power Inlet - White # 277-000137 or black # 277-000138. This will work well with a 2000 watt generator like the A-iPower 2,000-Watt Inverter Generator w/ Parallel Kit - Senci Motor - Portable - Gas - 120V # 289-SUA2000I. This combination will allow you to run the interior plugs but not at their max simultaneously. You would need to consider adding the second generator in parallel # 289-SUA2000I-2...
    view full answer...
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  • Can An Advent Air RV Air Conditioner System Be Installed On A Diamond Cargo Trailer
    The Advent Air RV Air Conditioner - 13,500 Btu - White # ACM135 weighs approximately 75lbs so you will need to support the roof to handle the weight. Typically people just build a frame out of wood or metal and mount it to the frame of the trailer. The roof will need to be thickened up to 2-1/2" to 5" thick with an opening 14-1/4" long x 14-1/4" wide. The # ACM135 is just the rooftop unit so you'll actually want the # ACM135C instead, which will come with the air distribution box and...
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  • Power Inlet 30 Amp Twist in Black for 2019 Forest River Gray Wolf 26DBH
    We don't currently have the Furrion 30 amp power inlet in black, but we do have it in Stainless Steel # F30ITSSS if you want the Furrion brand name. If you want something closer to the # 431861 in style we have the Epicord 30 Amp Twist Lock Power Inlet - Black # 277-000138 or the Mighty Cord Replacement RV Power Inlet - 30 Amp Twist Lock - Black # A10-30INBKVP.
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  • What Does the Weatherproof Cover w/ Threaded Ring # A10-30CV Fit
    The Epicord 30 Amp Twist Lock Power Inlet # 277-000138 has it's own waterproof cover. The Weatherproof Cover w/ Threaded Ring # A10-30CV is designed to fit a Twist Lock 30 amp connector like the part # A10-30FDT.
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  • Wiring and Socket to Use with Progress Dynamics RV Power Control Center # PD4135K
    For 30 amps like what the Progress Dynamics RV Power Control Center with AC/DC Panel and Converter/Smart Charger # PD4135K is rated for you'd need to use 10 gauge wire minimum if made from copper or 8 gauge if made from aluminum. For a new socket to install on the side of the camper we have the Epicord 30 Amp Twist Lock Power Inlet # 277-000138 which would work perfectly as well.
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  • Are the RV Power Cords # A10-3025ED90 and # 277-000149 Like Extension Cords
    The RV Power Cords, like part # A10-3025ED90 and part # F3OR36SBOEM, are 30' and 36' feet long cords respectively. Depending on what connections you have they can be used as an extension cord. One end is a 30 Amp male and the other end is a 30 Amp female twist lock connector like what connects to an inlet like part # 277-000138 which would be on your RV or trailer. I have attached some review videos for you to check out.
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  • How To Create a Separate Battery Charge and Light Trailer Connector for a Truck Bed Camper
    I do have an option for you but most of the standard trailer connectors are not going to handle an 8 gauge wire very well as it is just too large. Therefore, your best option as you mentioned would be to just run the lights and battery charge line on separate connectors. I have attached some parts you will need below for the above option. Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - part # PK12-707E Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - part # PK12706 Pollak...
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  • Recommendation for Adding AC Unit to Small Enclosed Trailer
    The best option we have available for your converted enclosed camper is the Advent Air RV Air Conditioner # ACM135BC because it's going to provide the most efficient cooling solution for the camper's interior during those hot summer months. We do not have any smaller AC units available and anything smaller we offer will be something like a powered ceiling fan vent which will only work to circulate air around the camper and not actually cool it down. As you mentioned in your question this...
    view full answer...
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  • How To Install a 30 Amp Service on an Enclosed Cargo Trailer
    Yes, in order to set your trailer up for use with shore power you will first need an AC distribution panel. For this, I recommend a Progressive Dynamics Series AC Distribution Panel. In order to bring power into the panel you will also need a power inlet, the Epicord 30 Amp Twist Lock Power Inlet part # 277-000138 and a shore power cord, the Furrion RV Power Cord with Handle part # F3OR36SBOEM. If you want to sometimes power the trailer with a generator you will also need an adapter for...
    view full answer...
  • How to Hook a Cargo Trailer Up to Shore Power
    In order to wire your cargo trailer for both 12 volt DC and 110 volt AC power you would need to install a AC/DC distribution panel and power converter which we currently do not offer. You would then wire the 12 volt power to the converter along with all of your 110 volt outlets. In order to hook up to shore power you would first need to install a power inlet like the Epicord 30 Amp Twist Lock Power Inlet part # 277-000138. Once the power inlet is installed you would then need an electrical...
    view full answer...

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