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Old 11-04-2022, 10:15 AM   #1
3 Rivet Member
2020 28' International
Wilmington , North Carolina
Join Date: May 2019
Posts: 126
Smart Plug conversion

I'm planning on converting my 50 amp Airstream to SmartPlug connectors. The 50 amp "plug and receiver" are straight forward and look reasonably easy to replace/install.
I always carry a 30 amp cord with me for those campgrounds that only offer 30 amp service. SmartPlug offers a converter that has a 50 amp female plug (to go into the airstream receiver) with a 30 amp male plug.

My question is this - the site offers this:

SmartPlug Marine Power Cord Adapter - 50 Amp Female to 30 Amp Male Twist Lock Connector - 4'

Note it says "Marine" - is this going to mess my connection up? It does not appear to have a threaded connector on the 30 amp male side of the adapter... I emailed SmartPlug and a RV model adapter is not on their list of available converters...
Anyone got this one figured out? Thanks!
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Old 11-04-2022, 12:13 PM   #2
Rivet Master
2015 25' Flying Cloud
Schaumburg , Illinois
Join Date: Jun 2020
Posts: 562
I think you are describing this (SmartPlug) product ?

The 30A (twist lock) end of that adapter is specifically for marine applications, to keep the plug end of the cord from coming loose out of the shore power socket (boats on water can move quite a lot, where RV’s are stationary in comparison). I’ve not seen any RV site power panel that accepted a twist lock plug, but it is certainly possible someone *could* configure one in that fashion. I converted my trailer to SmartPlug a couple years ago but I only have a 30A electrical panel, so the adapter I have is the opposite direction (to allow my 30A cord to plug into a 50A RV site panel). I fabricated my primary power cords by putting the SmartPlug trailer side plug onto cords I already had, I did not get any adapters or cords directly from SmartPlug. When I bought my SmartPlug kit, it came as a mated pair of connectors (trailer side and cord end side). Hope that helps you.
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