RV.Net Open Roads Forum: Tech Issues: DIY 50 amp to 20 amp pigtail

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > DIY 50 amp to 20 amp pigtail

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 7  
Prev  |  Next
Sponsored By:
Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 11/07/22 11:29am Link  |  Quote  |  Print  |  Notify Moderator

KnowNuthin wrote:

My original idea is officially axed... somewhere in the back of my brain having 50a running through an extension cord didn't seem like a good idea,



Mitch's idea works too... I already have the 50a - 30a dogbone...



Remember, you're not automatically pulling 50A through your ext cord. You only have the ability to, in the scenario you mentioned. If the "load" only takes say 2 amps, or whatever, that is what the cord "experiences." The danger mentioned is the "potential" to draw the theoretical 50A of current and not blow the breaker, thus heating up and damaging the weakest link in the chain.

There are a few options, not entirely clear without seeing your sub panel, but seems the easiest and safest no brainer is get a 30-20A pigtail and not ever touch the hot side of the box.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 11/07/22 11:55am Link  |  Quote  |  Print  |  Notify Moderator

No issues with 600 watts.


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

enblethen

Moses Lake, WA

Senior Member

Joined: 01/05/2005

View Profile






Posted: 11/07/22 03:22pm Link  |  Quote  |  Print  |  Notify Moderator

The lite wire becomes a fuse if you use the 50 ampere's circuit. Failure in the heater could cause wire to melt down and create a fire situation.


Bud
USAF Retired
Pace Arrow

2003 Chev Ice Road Tracker


time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 11/07/22 03:46pm Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

The lite wire becomes a fuse if you use the 50 ampere's circuit. Failure in the heater could cause wire to melt down and create a fire situation.
This could happen on a 15 amp circuit also.
Probably #18 wire in the cord.

LittleBill

Scranton, PA USA

Senior Member

Joined: 08/29/2003

View Profile


Offline
Posted: 11/07/22 04:15pm Link  |  Quote  |  Print  |  Notify Moderator

so do all you guys who have 15 amp circuits in your house, where your lamps are plugged in use a 1 amp circuit breaker to each individual lamp?





wa8yxm

Davison Michigan (East of Flint)

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 11/07/22 04:24pm Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

Your 50 amp should be a double pole breaker.
I think it is a bad idea for what you are thinking.
I would suggest getting thin breaker with two 20-amp breakers and installing a new receptacle. Some call breakers, wafer or tandem.

The short answer is yes it would however there is a danger

The longer answers #1: You need not DIY you can easily adapt from 50 amp RV to TT-30 and from there to a common 15 outlet (Why they always make it a 15 and not a 15/20 I will never understand)
in fact...
Here you are

But I'd not do that

I'd use a box that lets you put a 15 or 20 (Depending on the outlet) breaker in with the 15/20 amp outlet. You need to protect the smaller wireing

Your proper adapter would look like this

50 amp plug & pigtial== Box with 20 amp breaker---15/20 amp outlet---Tractor
Or use a 15 amp breaker and a 15 amp outlet

The breaker need not be teh "Square D" type you can use a "push to reset) if you have a box with enough room.

As you surmized one black (or red) wired is NOT connected.


Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times


toedtoes

California

Senior Member

Joined: 05/17/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 11/07/22 04:38pm Link  |  Quote  |  Print  |  Notify Moderator

LittleBill wrote:

so do all you guys who have 15 amp circuits in your house, where your lamps are plugged in use a 1 amp circuit breaker to each individual lamp?


No, but anything that produces significant heat is put on a GFCI outlet or is connected via a surge protector with internal circuit breaker. But I admit I have a healthy fear of electricity.


1975 American Clipper RV with Dodge 360 (photo in profile)
1998 American Clipper Fold n Roll Folding Trailer
Both born in Morgan Hill, CA to Irv Perch (Daddy of the Aristocrat trailers)

Bobbo

Wherever I park

Senior Member

Joined: 09/16/2007

View Profile



Good Sam RV Club Member

Offline
Posted: 11/07/22 07:41pm Link  |  Quote  |  Print  |  Notify Moderator

LittleBill wrote:

so do all you guys who have 15 amp circuits in your house, where your lamps are plugged in use a 1 amp circuit breaker to each individual lamp?

I was going to type this very thing on reaching the end of the thread. You beat me to it. Every one of my 1/2 amp (60 watt) lamps is plugged into a 15 amp outlet protected by a 20 amp breaker. Yes, I am risking the 18g wire shorting out and melting creating a fire hazard. I don't care.


Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB

ktmrfs

Portland, Oregon

Senior Member

Joined: 06/22/2005

View Profile


Offline
Posted: 11/07/22 08:09pm Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

The lite wire becomes a fuse if you use the 50 ampere's circuit. Failure in the heater could cause wire to melt down and create a fire situation.


EXACTLY!!! whole point is to make sure the wiring downstream of the breaker can handle the max breaker current in the case of a downstream fault. !!!!!


2011 Keystone Outback 295RE
2004 14' bikehauler with full living quarters
2015.5 Denali 4x4 CC/SB Duramax/Allison
2004.5 Silverado 4x4 CC/SB Duramax/Allison passed on to our Son!


ktmrfs

Portland, Oregon

Senior Member

Joined: 06/22/2005

View Profile


Offline
Posted: 11/07/22 08:12pm Link  |  Quote  |  Print  |  Notify Moderator

Bobbo wrote:

LittleBill wrote:

so do all you guys who have 15 amp circuits in your house, where your lamps are plugged in use a 1 amp circuit breaker to each individual lamp?

I was going to type this very thing on reaching the end of the thread. You beat me to it. Every one of my 1/2 amp (60 watt) lamps is plugged into a 15 amp outlet protected by a 20 amp breaker. Yes, I am risking the 18g wire shorting out and melting creating a fire hazard. I don't care.


the lamps are likely using a 14 or 16 ga wire, entirely capable of handling 15 or 20A for a short period of time if the lamp were to cause a short. A 12Ga extension cord is NOT capable of handling 50A for any length of time.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 7  
Prev  |  Next

Open Roads Forum  >  Tech Issues

 > DIY 50 amp to 20 amp pigtail
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.