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Old 04-05-2018, 12:36 PM   #21
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I have a pigtail adapter for sale in the classifieds if that helps.
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Old 04-05-2018, 12:48 PM   #22
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Itís really impossible the answer your question with anything more than a guess without knowing how your boat is wired to utilize the 120/240 power inlet. If you have a wiring diagram, Iíd be happy to look it over.
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Old 04-05-2018, 01:01 PM   #23
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I am confused and I know all the possibilities cold.

if people used the correct marine connector designations it would be a lot easier.
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Old 04-05-2018, 02:14 PM   #24
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Originally Posted by twistedtree View Post
Itís really impossible the answer your question with anything more than a guess without knowing how your boat is wired to utilize the 120/240 power inlet. If you have a wiring diagram, Iíd be happy to look it over.
Thanks, I may have it on the boat. Will take a look.
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Old 04-05-2018, 02:15 PM   #25
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I saw this adapter. Anyone know if this is the equivalent to a similar Marinco adapter, or does the term "dogbone" suggest it's something different? It's about half the cost of the Marinco.

Male to 50 Amp Female Marine Dogbone | ecspremier.com
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Old 04-05-2018, 02:19 PM   #26
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Originally Posted by foggysail View Post
Mikeó

I have a heavy Hubble Y connector. The male connector is marked 125/250 @ 50A while the two other cable ends appear to be 50 ampere rated @125V. This thing has been gathering dust in my basement long enough for me to think about trashing it. So if it can be of any use, you can have it for $30 to take care of whatever it costs me to mail it to you.

If Mike has no use for this Y, the same offer applies to others, as long as it gets delivered by the U.S. Post Office for no more than the $30.
Thanks for the offer, although I don't think it will fit, as the 50 amp 125/250v connector would need to be female to plug into the male connector on my boat.

BTW, I moved to the Bay Area from Hopkinton, MA. Right around the corner from you!
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Old 04-05-2018, 02:53 PM   #27
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Thanks for the offer, although I don't think it will fit, as the 50 amp 125/250v connector would need to be female to plug into the male connector on my boat.

BTW, I moved to the Bay Area from Hopkinton, MA. Right around the corner from you!
I don't know what to say other than good luck out there. Hopkinton is going through rapid housing developments which you are aware of. The Town started building an elementary school and they had to stop and enlarge the design because of the rapid growth. Ashland is not far behind.

Enjoy yourself out there
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Old 04-05-2018, 03:00 PM   #28
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The 50A Y adapter I offered in post #20 has found a new owner and is no longer available
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Old 04-05-2018, 03:37 PM   #29
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We have 2-120V @ 30A inlets and find that a simple 30A Y splitter is fine for us. (even with AC on we don't use more than 30A total) My question is, as we cruise further away from our home base of NH should I be concerned that 120V/30A connections are going away on the east coast?

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Old 04-05-2018, 04:09 PM   #30
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Can anyone tell me what this is? I've heard of 50A 125V, and 50A 125/250V. But never 50A 250V:


How about this apparently 50A outlet? I know the above plug doesn't fit into it:
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Old 04-05-2018, 04:13 PM   #31
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there are some places where transient slips are 50A 125/250V only, but I would say over half ask what you need so they must have the option whete to put you.

but why not just carry a dumb y splitter.... 50A 125/250V to to 30s on the boat? Usually not much more than $150 to $200.
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Old 04-05-2018, 04:16 PM   #32
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Well, first of all, it only has 3 prongs so it can never be 250 AND 125.

Maybe this image will help
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Old 04-05-2018, 04:19 PM   #33
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Originally Posted by psneeld View Post
there are some places where transient slips are 50A 125/250V only, but I would say over half ask what you need so they must have the option whete to put you.

but why not just carry a dumb y splitter.... 50A 125/250V to to 30s on the boat? Usually not much more than $100.
Yes, this sounds like the best option to make sure I'm covered.

Thanks.
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Old 04-05-2018, 04:35 PM   #34
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Can anyone tell me what this is? I've heard of 50A 125V, and 50A 125/250V. But never 50A 250V:


How about this apparently 50A outlet? I know the above plug doesn't fit into it:
Top one is an L6-50, 250V, single-phase, 2-pole, 3-wire. An odd duck, though. Not NEMA, I don't think.

The other is probably 277, 480, or 600V single-phase, 2-pole, 3-wire.

Edit: Could also be 250V 15A. Those slots look big compared to the diameter of the body, suggesting it's a small, low amperage receptacle.
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Old 04-05-2018, 04:45 PM   #35
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Shore power adapters

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Originally Posted by sunchaser View Post
A TF member from WA who plugged into wrong voltage receptacles in Sidney may weigh in. His vessel suffered some damage.

Michael, dock voltages are not always as they may seem. Be careful, carry the right adapters for your area and be prepared to "suffer" a night or two without AC or other higher voltage on boat items.

Thanks Dennis for pointing out there are never absolutes. This thread clearly illustrates why the new dock codes are a good idea, with modifications to GFCI standards as are now in discussion.

But, Canada will be a decade or two away in dock grounding revamps. BC Hydro is not pell mell rushing into a different set of issues. Not to mention 208 volts which gets into another parallel discussion.


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Old 04-05-2018, 04:50 PM   #36
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Originally Posted by psneeld View Post
there are some places where transient slips are 50A 125/250V only, but I would say over half ask what you need so they must have the option whete to put you.

but why not just carry a dumb y splitter.... 50A 125/250V to to 30s on the boat? Usually not much more than $150 to $200.
I thought the dumb splitter can pose a danger if plugged into the two 30s that are out of phase, or something like that. Given my knowledge of electricity, I'd probably spend the extra $$ on the smart reverse Y from Marinco that protects you from doing so.
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Old 04-05-2018, 04:55 PM   #37
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I don't know what to say other than good luck out there. Hopkinton is going through rapid housing developments which you are aware of. The Town started building an elementary school and they had to stop and enlarge the design because of the rapid growth. Ashland is not far behind.

Enjoy yourself out there
Moving out to the Bay Area suburb from a Boston suburb was painful. You have to apply the 50/50 rule. 50% less square footage for at least 50% more money. It's nuts out here. Houses are selling for $1,300 per square foot. Unlike Hopkinton and Ashland, there's just no more room to build, and the tech and biotech industries here are booming.

Schools in Mass are way better by the way!
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Old 04-05-2018, 05:22 PM   #38
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the smart y adaptets are for 2 30s pole side to a 50A 125/350V boat side.
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Old 04-05-2018, 08:29 PM   #39
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I saw this adapter. Anyone know if this is the equivalent to a similar Marinco adapter, or does the term "dogbone" suggest it's something different? It's about half the cost of the Marinco.

Male to 50 Amp Female Marine Dogbone | ecspremier.com


High Tide products are just a whole lot cheaper than Marinco. Iíve seem and owned some of their products and have not seen any problems.
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Old 04-05-2018, 08:44 PM   #40
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Everyone needs to realize that the voltage/amperage numbers you see on a plug or cord cap only indicate what that plug or cord cap is rated for, not what voltage or amperage is available to you when you plug into said cord cap, plug or receptacle. I have seen instances of 50 amp cord caps rated for 250 volts wired onto cords rated 20 amps and connected to 120 volt breakers. It is imperative that you know the requirements of your electrical system, voltage and amperage, and match your cords and cord caps to those requirements. Also, it would help to check voltage at the receptacle you are plugging into before you connect. If it has a three prong configuration, it is probably 120 volt, hot, neutral and ground. If it is a four prong configuration, it is 208 to 240 volt, two hot legs, a neutral and a ground. You would measure 208 to 240 volts between the two hot legs, approximately 120 volts between a hot leg to neutral, or hot leg to ground. From what I have seen, most boat AC systems will be single phase, 240 volt, which means two hot legs, measuring 240 volts reading hot leg to hot leg, a neutral leg, measuring 120 volts either hot leg to neutral, and a ground, measuring 120 volts either hot leg to ground. If you are familiar with your boat's electrical system, you can make informed decision concerning adapters when plugging into shore power.
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