I've stretched out Google (edit: and also checked a Lowe’s) but can't seem to find any replacement plug heads for what I am pretty sure is a 10 AWG extension cord which came with our used RV. (Edit: The jacket does not list the wire gauge.) Best I can find is 12 AWG. The plug head is missing the ground pin which causes it to slip out of the outlet too easily. I'm hesitant to cut the outer casing to confirm it's 10 AWG but the diameter is about 9/16ths of an inch which matches what I've seen 10 AWG cord is. And I don't want to cut the head to attempt to mate it with the common 12 AWG replacement heads because if it doesn't fit, it would ruin it.So. Anyone know of 10 AWG replacement plug heads?

NEMA 15A is a 15 amp plug should not neee 10gago to an electrical supply house Skip google and go to a sticks and bricks electrical supply house. If you can take the cord, or a couple inches of it, with you.

Search for NEMA 5-15 or 5-15PIf really is 10AWG search for one that uses "clamps" to hold the bared wire.

Look closely at the jacket of your cord. All cords, cables, wires, are labeled in size and type, most cords the writing/labeling is molded into the jacket.

You should be installing a 30-TT 30 amp cord body. cord bodyThen buy a dog bone 30-15 adapter. Adapter

Dusty R wrote:Look closely at the jacket of your cord. All cords, cables, wires, are labeled in size and type, most cords the writing/labeling is molded into the jacket.That was the first thing I did. Not there.

[SOLVED] Replacement plug head for NEMA 15A 10 AWG extension

SlowBro
Explorer III
Sep 09, 2021
I think I’ll slice the jacket lengthwise and look for wire labeling on that. Wish they had followed convention and put the label on the jacket.
pianotuna
Nomad III
Sep 09, 2021
Hi,

I drilled out the cord access to accept #10 wire. I used one of the plugs that works like a clam shell. It has screw terminals.
enblethen
Nomad
Sep 09, 2021
many like this will accept the fine stranded number 10 wire. Cord body
A 20 amp cord body will not fit into a 15 amp receptacle. Blades have different configuration.
time2roll
Nomad
Sep 09, 2021
The Hubbell plug will take #10 stranded wire with nickel plated clamp.

Cord Grip Range .230" - .720" (5.8 - 18.3mm)

https://www.stayonline.com/pc_product_detail.asp?key=D6AC1C5C9D9C45019443C08AB1920082

Also available in 90 degree.
enblethen
Nomad
Sep 09, 2021
Should have said that the individual wires do not have gauge shown inside cable.
Gdetrailer
Explorer III
Sep 09, 2021
SlowBro wrote:
I've stretched out Google (edit: and also checked a Lowe’s) but can't seem to find any replacement plug heads for what I am pretty sure is a 10 AWG extension cord which came with our used RV. (Edit: The jacket does not list the wire gauge.) Best I can find is 12 AWG. The plug head is missing the ground pin which causes it to slip out of the outlet too easily. I'm hesitant to cut the outer casing to confirm it's 10 AWG but the diameter is about 9/16ths of an inch which matches what I've seen 10 AWG cord is. And I don't want to cut the head to attempt to mate it with the common 12 AWG replacement heads because if it doesn't fit, it would ruin it.

So. Anyone know of 10 AWG replacement plug heads?

Standard replacement NEMA 15A rated plugs will generally accept larger than 12Ga wire as long as it is a clamping arrangement.

I just mated a cheapo Harbor Freight NEMA 15A plug to a piece of 10 Ga building wire and it fits and clamps fine.

Here is pix of the plug and wire..

Although, I wouldn't suggest using a HF plug for this application since you are using as an extension cord for your RV as they are pretty cheesy on design quality.

For your application, any of the name brand plugs found at Home Depot or Lowes should work fine.
Mike134
Explorer
Sep 09, 2021
wa8yxm wrote:
NEMA 15A is a 15 amp plug should not neee 10ga

go to an electrical supply house Skip google and go to a sticks and bricks electrical supply house. If you can take the cord, or a couple inches of it, with you.

/\ /\ /\ /\ THIS!!!

you want something like this with a wire range of 18-10 ga
https://www.leviton.com/en/products/5266-cg
SlowBro
Explorer III
Sep 09, 2021
wa8yxm wrote:
NEMA 15A is a 15 amp plug should not neee 10ga

go to an electrical supply house Skip google and go to a sticks and bricks electrical supply house. If you can take the cord, or a couple inches of it, with you.

Sorry, SlowBro is slow. You said electrical supply house, I heard hardware store.

Called an actual electrical supply house and aHa! Leviton 5266-C can support 10 AWG and it’s about $10.

Problem solved.
SlowBro
Explorer III
Sep 09, 2021
time2roll wrote:
The Hubbell plug will take #10 stranded wire with nickel plated clamp.

Cord Grip Range .230" - .720" (5.8 - 18.3mm)

https://www.stayonline.com/pc_product_detail.asp?key=D6AC1C5C9D9C45019443C08AB1920082

Also available in 90 degree.

Also a very good option.
enblethen
Nomad
Sep 09, 2021
Remember that you may not be able to run everything. Air conditioner may trip shore power supply breaker.
Hope it works out for you! Thanks for the update!

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[SOLVED] Replacement plug head for NEMA 15A 10 AWG extension

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