How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Matt W. Your Own Question

Matt W.
Matt W., Mr.
Category: Electrical
Satisfied Customers: 63
Experience:  Fully licensed and insured electrical contractor
Type Your Electrical Question Here...
Matt W. is online now
A new question is answered every 9 seconds

how to wire a Nema 6-50R to a Nema L14-30P... understand the

Customer Question

how to wire a Nema 6-50R to a Nema L14-30P... understand the differences but application does not require a 50amp rating, only 30amp, and standard product comes with 6-50P...
Submitted: 2 years ago.
Category: Electrical
Expert:  John D. replied 2 years ago.

Hi Sir or Madam, I look forward to resolving your electrical problems.

Please provide more information about your project. A NEMA 6-50R is a straight blade receptacle and a NEMA L14-30P is a locking plug. The two cannot mate, it is impossible. It is also highly inadvisable and unsafe to mix amperages of devices in a device. The amperages of each device should match the rated output of the device.

Customer: replied 2 years ago.
What I'm trying to do is create an adaptor cord that would allow me to bridge between the 6-50 male plug, hence my request for a 6-50 receptacle, and at the other end it needs to have a L14-30 male plug to be inserted in a L14-30 receptacle.

This project is simply to allow running an inverter welder off a portable generator. Both are small and in addition, my input demand will not be anywhere close to 30 amps... In fact, I'm just looking for this an a backup should the new arise meaning this is not intended to be my running condition, just an opti
Expert:  John D. replied 2 years ago.
This is not possible. The 6-50 plug is a three wire connection. The L14-30 receptacle is a four wire connection. As you know, the devices are rated for different amperages. Any connection between these two devices will be unsafe for several reasons. Unfortunately, you cannot make the connection which you are attempting.
Customer: replied 2 years ago.
How about going making the cord from 6-50R and an L5-30 plug? Both are 3 wires.....
Expert:  John D. replied 2 years ago.
True, both are three wires. One is a 30 ampere device, the other is a 50 ampere device. Connection between the two is unsafe.
Customer: replied 2 years ago.
How about a cord using a 6-30R and an L5-30P?
Expert:  John D. replied 2 years ago.
A 6-30R is a 2 pole 3 wire 250 volt receptacle and a L5-30P is a 2 pole 3 wire 125 volt plug. The two devices are not compatible.
Customer: replied 2 years ago.
How aboutwe a 6-30R and L14-30P?
Expert:  John D. replied 2 years ago.
This won't work. Period. End of story.
Customer: replied 2 years ago.
Then please suggest a solution rather then telling me it won't work. You're the expert right? Why do I find other sources saying its possible?
Expert:  Matt W. replied 2 years ago.
The L 14 30 R is on the generator and you want to connect to the 6-50P, Correct?
Customer: replied 2 years ago.
that is correct
Expert:  Matt W. replied 2 years ago.

You need to get the matching L 14 30 P (male plug ). Connect the grounnd green , off the 6-50 P you strip and cut off, wire to the green screw of the male plug (L-14-30 P). The silver screw does not connect to anything because your 6 - 50 P is just 2 hots and a green ground. All that is left is the 2 hots from the 6-50 P, these terminate to the brass colored screws of the male L -14-30. Make sure no stripped cable or copper is hanging out of the backside of the plug when you put it together. Read the directions to make sure your plug is put together properly and it is not loose in any fashion. Finally make sure the voltage rating of the equipment you are hooking up matches the voltage rating of the generator output Recept. O.K current you said is not the issue but voltage will be if you don't make sure.

Matt W., Mr.
Category: Electrical
Satisfied Customers: 63
Experience: Fully licensed and insured electrical contractor
Matt W. and other Electrical Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
< Last | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Mike

    Master Electrician

    Satisfied Customers:

    1425
    Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer
< Last | Next >
  • http://ww2.justanswer.com/uploads/mikepettinato/2009-9-4_41145_DSC005132.jpg Mike's Avatar

    Mike

    Master Electrician

    Satisfied Customers:

    1425
    Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer
  • http://ww2.justanswer.com/uploads/WI/WireitUp/2012-6-17_18212_Photo00006.64x64.jpg Jason's Avatar

    Jason

    Service Technician

    Satisfied Customers:

    3278
    Over 15 years of experience in all types of installations, troubleshooting, and repairs.
  • http://ww2.justanswer.com/uploads/MI/MikeG2010/2012-6-7_192640_IMG01612.64x64.jpg Mike G.'s Avatar

    Mike G.

    Master Electrician

    Satisfied Customers:

    5318
    Proven Professional 45 years Experience
  • http://ww2.justanswer.com/uploads/AS/AssuredElectrical/2011-9-13_221243_me.64x64.gif AssuredElectrical's Avatar

    AssuredElectrical

    Master Electrician

    Satisfied Customers:

    2149
    Contractor-40 Years in the ElectricalTrade
  • http://ww2.justanswer.com/uploads/electrifier/2008-12-16_200429_headbob1.jpg electrifier's Avatar

    electrifier

    Master Electrician

    Satisfied Customers:

    1454
    Electrical contractor and electrical inspector for over 24 years with phone and networking expertise
  • http://ww2.justanswer.com/uploads/rich03dungo/2010-3-17_101556_tshirt2.jpg Rich's Avatar

    Rich

    Master Electrician

    Satisfied Customers:

    1115
    Over 35 years residential, commercial, industrial wiring, install, troubleshoot, service, maintain
  • http://ww2.justanswer.com/uploads/UR/urelectrician/2012-9-28_223652_JustAnswerPic.64x64.jpg Kevin's Avatar

    Kevin

    Licensed Electrician

    Satisfied Customers:

    993
    27 years as a Licensed Electrical Contractor in Illinois, 5 year college Electrical Instructor, Former Electrical Inspector, Diploma in Digital Electronics, Former Illinois Licensed Home Inspector