I would love to do a smart plug but I don't have the money to do that right 
now.  My draw is not much either.  I have my marine AC unit and the battery 
charger that are the only things running.  When I am there I might run a few 
other light draw items but I am not there much.  Sure don't need 50 amps and 
probably don't even come close to 30.  The fuse panel has a reverse polarity 
light but no alarm.

So I guess at this point I see if Home Depot has the stuff to make up a twist 
lock cable and when I decide where I want to keep the boat in St. Augustine, 
see if the dock master will let me change it out to a range plug.

Vern

From: [email protected] 
[mailto:[email protected]] On Behalf Of James Maynard
Sent: Thursday, March 03, 2011 9:49 AM
To: [email protected]
Subject: Re: [Liveaboard] EXT :Re: Power Issue

As I understand it, Norm used the range plug and receptacle to replace the 
connectors on the dock, not the boat-side connectors.

If you have a 30-amp connection to shore power, I would recommend the SmartPlug 
boat-side receptacle, the SmartPlug shore power code, and use either the 
conventional twist-lock connectors on the shore end (if the marina won't let 
you change their power point on the dock end of the cord) or the range plug and 
connector (if the marina management agrees).

http://www.smartplug.com

Unfortunately, the 50-amp version of the SmartPlug stuff isn't available yet.

On board the boat, be sure to have a reverse polarity detector and alarm.  And, 
especially if you ever dock at fresh-water marina, an ELCI (Equipment Leakage 
Circuit Interrupter) per ABYC E-11.11.  Another Very Good Thing would be an 
isolation transformer.

Jim Maynard
S/V Mistress of Portland, Oregon
Saint Helens, Oregon, USA




On 2011-03-03 06:32 AM, Densler, Vernon R (IT Solutions) wrote:

So let me make sure I understand this.  You use the range type receptacle and 
plug to replace the twist lock on the boat.  How do you get to the twist lock 
on the dock?  I would much prefer to make my own cable if I can get everything 
to match up.



-----Original Message-----

From: 
[email protected]<mailto:[email protected]>
 [mailto:[email protected]] On Behalf Of 
[email protected]<mailto:[email protected]>

Sent: Wednesday, March 02, 2011 5:18 PM

To: [email protected]<mailto:[email protected]>

Subject: Re: [Liveaboard] EXT :Re: Power Issue







For the years I lived at a marina I copied the shrimpers of Charleston SC

and used a range plug (the plug and receptacle used by electric kitchen

ranges) on the dock end of my shore line.  In the first marina (Stono

Marina Charleston SC) the owner understood the wisdom of the thing and at

the second one (Green Cove Springs FL) I installed my own power outlet box.

The boat end of the shore line had crimped and soldered ring terminals

bolted to the ship's wiring.



Range plugs/receptacles are commonly available, cheap, can carry sufficient

amps, have lots of copper with a large contact area and can be taken apart

to be cleaned and greased annually.



I cannot remember ever having a problem with them, while I do remember a

few twist-lock connectors that let the magic smoke out.





Norm

S/V Bandersnatch







The biggest problem with the current twist lock power connectors is

the limited connection area of the connectors. A straight push

connection with a locking collar would be far preferable.



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