Replacing shore power cable

6

6cuda6

Active member
Jul 1, 2019
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Ontario, Canada
Went to replace the 120v power cable plug and sure a sh*t the wires are green..... should one upgrade to 50amp or stay with 30? I need to replace my
converter still so is the time to upgrame do 55amp converter and cable?
--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
I like my original cord. It looks like a 50 amp and has a 50 amp plug. But it is actually a cord marked 40 amp.
A 50 amp cord is too thick and hard to wind. A 40 amp cord is plenty heavy and that is what GM supplied in the motorhome. Most people refer to it as a 50 amp.

The circuit breaker box has two 20 amp breakers so when the plug is connected to the receptacle in the electric compartment each line goes to a 20 amp breaker.

It will run two air conditioners a microwave, toaster and coffee pot and the electric water heater all at the same time

Emery Stora

>
> Went to replace the 120v power cable plug and sure a sh*t the wires are green..... should one upgrade to 50amp or stay with 30? I need to replace my
> converter still so is the time to upgrame do 55amp converter and cable?
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
> I like my original cord. It looks like a 50 amp and has a 50 amp plug. But it is actually a cord marked 40 amp.
> A 50 amp cord is too thick and hard to wind. A 40 amp cord is plenty heavy and that is what GM supplied in the motorhome. Most people refer to it
> as a 50 amp.
>
> The circuit breaker box has two 20 amp breakers so when the plug is connected to the receptacle in the electric compartment each line goes to a 20
> amp breaker.
>
> It will run two air conditioners a microwave, toaster and coffee pot and the electric water heater all at the same time
>
> Emery Stora
>
>

> >
> > Went to replace the 120v power cable plug and sure a sh*t the wires are green..... should one upgrade to 50amp or stay with 30? I need to
> > replace my
> > converter still so is the time to upgrame do 55amp converter and cable?
> > --
> > Rich Mondor,
> >
> > Brockville, ON
> >
> > 77 Hughes 2600
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

My breaker box only has a 30amp main so i would have to upgrade everything i presume if i went up to a 40/50amp....am i getting this correct?

--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
WE have new and used 30 or 40 amp cables.

On Fri, Aug 16, 2019 at 3:37 PM tonka6cuda6--- via Gmclist <

> > I like my original cord. It looks like a 50 amp and has a 50 amp plug.
> But it is actually a cord marked 40 amp.
> > A 50 amp cord is too thick and hard to wind. A 40 amp cord is plenty
> heavy and that is what GM supplied in the motorhome. Most people refer to it
> > as a 50 amp.
> >
> > The circuit breaker box has two 20 amp breakers so when the plug is
> connected to the receptacle in the electric compartment each line goes to a
> 20
> > amp breaker.
> >
> > It will run two air conditioners a microwave, toaster and coffee pot and
> the electric water heater all at the same time
> >
> > Emery Stora
> >
> >

> > >
> > > Went to replace the 120v power cable plug and sure a sh*t the wires
> are green..... should one upgrade to 50amp or stay with 30? I need to
> > > replace my
> > > converter still so is the time to upgrame do 55amp converter and
> cable?
> > > --
> > > Rich Mondor,
> > >
> > > Brockville, ON
> > >
> > > 77 Hughes 2600
> > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> My breaker box only has a 30amp main so i would have to upgrade everything
> i presume if i went up to a 40/50amp....am i getting this correct?
>
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
Yes, the supply cable only needs to supply as much current as the main
breaker. And adaptation of the electrical system, including the circuit
breakers in the box, is NOT a trivial exercise -- definitely not something
for anyone to attempt who doesn't already know the implications (Such as
the fact that the OEM 40 amp cable is actually suitably wired for plugging
into a 240 vac socket!)

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com

On Fri, Aug 16, 2019 at 6:37 PM tonka6cuda6--- via Gmclist <

> > I like my original cord. It looks like a 50 amp and has a 50 amp plug.
> But it is actually a cord marked 40 amp.
> > A 50 amp cord is too thick and hard to wind. A 40 amp cord is plenty
> heavy and that is what GM supplied in the motorhome. Most people refer to it
> > as a 50 amp.
> >
> > The circuit breaker box has two 20 amp breakers so when the plug is
> connected to the receptacle in the electric compartment each line goes to a
> 20
> > amp breaker.
> >
> > It will run two air conditioners a microwave, toaster and coffee pot and
> the electric water heater all at the same time
> >
> > Emery Stora
> >
> >

> > >
> > > Went to replace the 120v power cable plug and sure a sh*t the wires
> are green..... should one upgrade to 50amp or stay with 30? I need to
> > > replace my
> > > converter still so is the time to upgrame do 55amp converter and
> cable?
> > > --
> > > Rich Mondor,
> > >
> > > Brockville, ON
> > >
> > > 77 Hughes 2600
> > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> My breaker box only has a 30amp main so i would have to upgrade everything
> i presume if i went up to a 40/50amp....am i getting this correct?
>
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
> Yes, the supply cable only needs to supply as much current as the main
> breaker. And adaptation of the electrical system, including the circuit
> breakers in the box, is NOT a trivial exercise -- definitely not something
> for anyone to attempt who doesn't already know the implications (Such as
> the fact that the OEM 40 amp cable is actually suitably wired for plugging
> into a 240 vac socket!)
>
> Ken H.
> Americus, GA
> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
> www.gmcwipersetc.com
>
>
> On Fri, Aug 16, 2019 at 6:37 PM tonka6cuda6--- via Gmclist <

>

> >> I like my original cord. It looks like a 50 amp and has a 50 amp plug.
> > But it is actually a cord marked 40 amp.
> >> A 50 amp cord is too thick and hard to wind. A 40 amp cord is plenty
> > heavy and that is what GM supplied in the motorhome. Most people refer to it
> >> as a 50 amp.
> >>
> >> The circuit breaker box has two 20 amp breakers so when the plug is
> > connected to the receptacle in the electric compartment each line goes to a
> > 20
> >> amp breaker.
> >>
> >> It will run two air conditioners a microwave, toaster and coffee pot and
> > the electric water heater all at the same time
> >>
> >> Emery Stora
> >>
> >>

> >>>
> >>> Went to replace the 120v power cable plug and sure a sh*t the wires
> > are green..... should one upgrade to 50amp or stay with 30? I need to
> >>> replace my
> >>> converter still so is the time to upgrame do 55amp converter and
> > cable?
> >>> --
> >>> Rich Mondor,
> >>>
> >>> Brockville, ON
> >>>
> >>> 77 Hughes 2600
> >>>
> >>> _______________________________________________
> >>> GMCnet mailing list
> >>> Unsubscribe or Change List Options:
> >>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >>
> >>
> >> _______________________________________________
> >> GMCnet mailing list
> >> Unsubscribe or Change List Options:
> >> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> > My breaker box only has a 30amp main so i would have to upgrade everything
> > i presume if i went up to a 40/50amp....am i getting this correct?
> >
> > --
> > Rich Mondor,
> >
> > Brockville, ON
> >
> > 77 Hughes 2600
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Yup agreed....i know my transportation type electrical well but when it comes to house type eiectrical i have alot to learn.

--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
Unless you have some compelling reason to have a larger capacity, I would stay with exactly what was originally installed originally. Upgrading to 50
(40amp) service requires some additional changes inside the power panel too. Keep in mind that 30 amp service is 120 volt service while 50 (40) amp
service is 240 volt service . The change will require a second main breaker and changing the buss bars inside the breaker box.

Usually corroded (green) wires only extend 6 or 12 inches from the end of the cable. Trim off the first 6 or 12 inches and see if the wires are
copper color again. If they are. install a new plug and use the old cable.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
> Unless you have some compelling reason to have a larger capacity, I would stay with exactly what was originally installed originally. Upgrading
> to 50 (40amp) service requires some additional changes inside the power panel too. Keep in mind that 30 amp service is 120 volt service while 50
> (40) amp service is 240 volt service . The change will require a second main breaker and changing the buss bars inside the breaker box.
>
> Usually corroded (green) wires only extend 6 or 12 inches from the end of the cable. Trim off the first 6 or 12 inches and see if the wires are
> copper color again. If they are. install a new plug and use the old cable.

I actually cut it back 2 feet after i saw how bad it was to do exactly as you said but it is still peppered with green....so new cable its getting.

--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
> I actually cut it back 2 feet after i saw how bad it was to do exactly as you said but it is still peppered with green....so new cable its
> getting.

Well, forget that idea.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
Rich, The local Surplus store has had 30A 25ft RV cords male to pigtail for under $20.00, you might want to check there if you have a local surplus
store. I haven't seen them at my local store for a couple of months though.

I've seen them in the surplus section at Princess Auto from time to time as well.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
> Rich, The local Surplus store has had 30A 25ft RV cords male to pigtail for under $20.00, you might want to check there if you have a local
> surplus store. I haven't seen them at my local store for a couple of months though.
>
> I've seen them in the surplus section at Princess Auto from time to time as well.

Thanks for the heads up Bruce....i figured Princess might have them but havent looked.

--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
If i cant locate a power cable locally for reasonable price is there anything wrong with knocking the plug end off a 30amp RV extention cord and using
it?
--
Rich Mondor,

Brockville, ON

77 Hughes 2600
 
Nothing wrong at all. And if it is a removable socket, keep it or give it to someone making an extension cord.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
I have a palm beach, so it may differ from your setup

I cut the main chord at about "18 from the base and put a new male end onto
it. I can plug it into the generator port easily, and no longer worry about
coiling in the box. I purchased a 50 amp extension cable from Amazon and
use that to connect to shore power now. That chord comes with me inside the
coach when we travel.

I also placed a female end onto the original cable and use that cable when
i am at home

On Sat, Aug 17, 2019 at 11:12 AM Johnny Bridges via Gmclist <

> Nothing wrong at all. And if it is a removable socket, keep it or give it
> to someone making an extension cord.
>
> --johnny
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me
> in hell
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
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