30 Amp Twist-Lock Shore Cord Ring Replacement

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Original Member Title: Shore Power Cord
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An RVer needed to repair a 30 amp twist-lock shore power cord after the threaded locking ring broke, and asked why many replacement cords come straight out from the trailer wall instead of using a 90-degree connector that would direct the cord downward. Members suggested the 90-degree style may reduce strain, while the straight version may be more common because of cost or availability.

Members suggested checking electrical suppliers, RV dealers, and replacement cordsets, and one option...
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TL

tlmgcamp1

Senior Member
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Jul 16, 2016
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1,290
I have a twist-lock 30amp female end on the power cord. It also has a ring that threads onto the trailer to further secure it. Well the plastic threaded part on the plug didn't make it home from the last trip so I am replacing the cord. I am very surprised that the vast majority of the plugs come off perpendicular to the trail wall rather than having a 90 degrees bend so the wire is directed straight down to the ground. The 90 degree version would seem to put much less stress on the connection to the RV. Any thoughts on
90.jpg
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why the perpendicular plug is more popular among the manufacturers?
 
I would certainly prefer the 90deg connector. I would guess the perpindicular version is a cost issue. You could likely just change out the connector vs. buying a whole new cable.
 
Might not be as easy as I thought, I looked on Amazon and couldn't find a replacement plug.
 
I thought of that and did that search also. I am not sure if I could replicate the seal of an untouched cord with an aftermarket DIY repair.
 
Have you tried any electrical supply houses? I would think that a major supplier would have them or be able to get one for you.
 
Gary RV_Wizard said:
Marinco makes one. Camping World carries a right-angle twist lock and I sure other places as well.

Etrailer offer a right angle twist lock too. And Amazon.

Marinco ParkPower Right-Angle 30' RV Cordset, 125V, 30A

Shop the Marinco ParkPower Right Angle 30' RV Cordset, designed for 125V and 30A connections. Durable and reliable for your camping needs. Buy now.
www.campingworld.com www.campingworld.com


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I saw the Marino but couldn't find a Pic that showed if it was a twist lock or standard 3 blade. I did find one on Amazon which was half the price of the one you found on etrailer.com (that managed to miss my search) with free shipping
 
John From Detroit said:
Check a big rv dealer... 50% chance or better they have just the ring.

I googled Marinco Locking Ring.. Among many other links
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The one I have now is not Marinco. Not sure how replacing the ring would work because it is not supposed to come off over the female end. Wondering if it can be worked over the male end and come up behind the female end. Since its under $20 it might be worth rolling the dice before I spend almost $100 on a new cord
 
The female end should be rubber housed. You just force it over the ring.. Easy to do. I've done it.

Now if the female end housing is hard plastic......

THere are two types of rings. One is a "Quick" about 1/4 turn to latch the other screws on (Multiple turns) My cord came with the "Quick" and I prefer the Screw so I switched Was easy.
 
John From Detroit said:
The female end should be rubber housed. You just force it over the ring.. Easy to do. I've done it.

Now if the female end housing is hard plastic......

THere are two types of rings. One is a "Quick" about 1/4 turn to latch the other screws on (Multiple turns) My cord came with the "Quick" and I prefer the Screw so I switched Was easy.
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Ring on its way from Amazon so we will see if I get off cheap here or not
 
tlmgcamp1 said:
I saw the Marino but couldn't find a Pic that showed if it was a twist lock or standard 3 blade. I did find one on Amazon which was half the price of the one you found on etrailer.com (that managed to miss my search) with free shipping
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The description plainly states it has a locking connector on the RV end (twist-lock). IMO the locking ring is overkill since the contacts are designed to provide a mechanical lock when you twist to seat the plug.
 
The locking ring is for water proofing.. The "Marin" part of Marinco is derived from marine.
These connectors are designed to get wet.,... Externally.. But stay dry inside.,

Sometimes. they do just that

But the locking ring is for the weather seal. not support.
 
Lou Schneider said:
The description plainly states it has a locking connector on the RV end (twist-lock). IMO the locking ring is overkill since the contacts are designed to provide a mechanical lock when you twist to seat the plug.
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I agree. We have a similar cable for the shore power connection of our boat (an old Carver Santego) and the twist lock is quite enough to maintain the cable connection in place. The ring is an additional locking measure, and to keep the plug dry - more intended for marine applications (you don't want the live end of the cable to fall into the water, in the docking slip.
 
Ok...got the ring and it can't get past the male end. I am going to cut the pull off to use it and see if it annoys me enough to spend the $$ to replace it. I might try softening the finger pull with heat before I cut it.
20260323_192522.jpg
 
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