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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 electric plug adapter
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dave andersen
1st Mate

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85 Posts

Initially Posted - 05/10/2011 :  04:01:59  Show Profile
Hoping to tap the knowledge of someone who can tell me a less expensive way to adapt the big 3 prong dock plug to my regular
plug for a battery charger. West Marine wants 70.00 for an adapter with a pig tail -- all I need is a simple tail-less adapter. Many thanks for your help.

Raven in Langley Harbor, Whidbey Island, WA

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OJ
Master Marine Consultant

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USA
4382 Posts

Response Posted - 05/10/2011 :  04:13:04  Show Profile
Have you looked on ebay? Lots of bargains on boat stuff on ebay!

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dmpilc
Master Marine Consultant

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USA
4593 Posts

Response Posted - 05/10/2011 :  05:05:58  Show Profile
Make your own. Should be able to buy the parts at a hardware store, plug for the dock, 1 ft of heavy gauge wire, and a std outdoor female plug. You could also buy a short appliance extension cord, cut the male end off and add the dock side plug you need. Should cost less than $30.
I did this in reverse. Before our docks were re-wired last year, I had to make an adapter to fit a big 30 amp cord to a standard electrical outlet. Found everything I needed at Home Depot.

Edited by - dmpilc on 05/10/2011 05:08:23
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NautiC25
Admiral

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USA
957 Posts

Response Posted - 05/10/2011 :  05:08:57  Show Profile
Try a local RV store. It's a common item there as not all RV parks have 50a connections, so people carry them just in case.

The "marine" stores mark them up.

Edited by - NautiC25 on 05/10/2011 06:16:14
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Prospector
Master Marine Consultant

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Canada
3159 Posts

Response Posted - 05/10/2011 :  05:42:18  Show Profile  Visit Prospector's Homepage
We bought an adaptor that allows me to plug the boat into household AC. I'll try to get a pic tonight. I think it cost around $50.

Found it on Defender... http://www.defender.com/product.jsp?path=-1|328|299260|319692&id=140049 - you will have to copy-paste that whole string to get to teh right product. Defender's price is $39.99.

We leave this on the boat all winter with a heavy-duty extension cord run to the house to keep the battery charger going.

Edited by - Prospector on 05/10/2011 05:46:11
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Stinkpotter
Master Marine Consultant

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Djibouti
9087 Posts

Response Posted - 05/10/2011 :  06:17:50  Show Profile
I have [url="http://www.defender.com/product.jsp?path=-1|328|299260|319692&id=140064"]this[/url] (from Defender)--plugs into a 30-amp dock outlet, and a standard extension cord plugs into it. I don't use it for "shore power" except to run some power tools at my home dock.

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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 05/10/2011 :  09:35:19  Show Profile
eBay has these adapters listed all the time, but it sounds like you need a 30A power inlet on your boat to tap the 30A service on the dock. If so, you may just want to spend a few more dollars installing the inlet than using various adapters and such. I bought a new Marinco inlet many years ago on eBay and I think I paid half price. Just a thought.

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Prospector
Master Marine Consultant

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Canada
3159 Posts

Response Posted - 05/10/2011 :  10:02:31  Show Profile  Visit Prospector's Homepage
Don,

On our lake the marinas all have 30 Amp power, and the yacht clubs generally have a variety of things.

In a raft-up we will often plug into the 15 Amp outlet on the boat next to us and so-on down the line until the first boat's breaker trips. I know that is bad practice, but as long as we are all just running lighting the draw shouldn't be too much.

In any case, we really need the ability to switch between 30 amps and 15 amps. Never know which we will run into.

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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 05/10/2011 :  10:46:37  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Prospector</i>
<br />In any case, we really need the ability to switch between 30 amps and 15 amps. Never know which we will run into.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Agreed. I have an adapter as well, just in case.

Most marinas have rules concerning what can be hooked up to their power outlets such as power cords rated at least at the outlet amperage, waterproof locking connectors, outdoor rated cables, etc. Assuming Dave is charging his battery at his marina, he should be properly plugging his boat into shore power then plugging his battery charger into an outlet inside his boat. Some marinas might frown upon a boater using a 30A/15A adapter at the box then using an extension cord snaking into a crack in the hatch boards for power. It would be a shame for Dave to spend good money on an adapter only to find out the marina doesn't allow it.

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Dave5041
Former Mainsheet Editor

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USA
3758 Posts

Response Posted - 05/10/2011 :  13:35:24  Show Profile
I use a two piece Marinco adapter (about $45 at WM) that is male 30A to female 15A and 15A male to 30A female - locks together and no pigtail so it is very compact for storage.

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