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Old 02-08-2019, 02:18 PM   #21
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Yes that is a primary 240V two phase electrical system with fairly minor loads covered by 120V. You don't say if you have an inverter or not but if you do I will bet it only supplies 120V to the 120V panel, which isn't all bad as the microwave and galley outlets are what most people use an inverter for.


The only downside I can see is the fact that some marinas (fairly few but may be significant) can't supply 240V directly or indirectly with two opposite leg 120V supplies Y'd together.


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Old 02-08-2019, 03:59 PM   #22
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My apologies, you were quite right.

Never seen a 240 VAC dominant wired boat that small (under 50'). If you want to run it off a gas generator, it will need to be a 240 VAC, not the inverter style you were considering. It will likely be significantly heavier and noiser, but possibly cheaper. Looks like $1,550 would get you 3,500 watts (14 amps 240 VAC) and $2,000 would get you 5,500 watts (23 amps 240 VAC).

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Old 02-08-2019, 04:24 PM   #23
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Silly question but what is the switch with a red light that says Start for?
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Old 02-08-2019, 04:53 PM   #24
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My apologies, you were quite right.

Never seen a 240 VAC dominant wired boat that small (under 50'). If you want to run it off a gas generator, it will need to be a 240 VAC, not the inverter style you were considering. It will likely be significantly heavier and noiser, but possibly cheaper. Looks like $1,550 would get you 3,500 watts (14 amps 240 VAC) and $2,000 would get you 5,500 watts (23 amps 240 VAC).

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Can you imagine the noise and vibration from one of those in that boats cockpit?
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Old 02-08-2019, 04:53 PM   #25
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Silly question but what is the switch with a red light that says Start for?
Genset start switch maybe.
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Old 02-08-2019, 05:21 PM   #26
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I apologize for not having followed all of your other theads on the need for this generator. I think I read that the current onboard generator isn't working. I believe that I also read if you liked your upcoming trip, you were considering selling this boat and buying something else. If that's the case, bite the bullet and fix or replace your current generator. The hit you will take selling a relatively new boat with a dead generator will likely be more than squaring it away now, plus you get to use it on your trip.

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Old 02-08-2019, 05:34 PM   #27
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Now I get it. Old generator broken. Looking for 240 v temp replacement.
Put me in the fix or replace the old one category.
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Old 02-08-2019, 06:00 PM   #28
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Can you imagine the noise and vibration from one of those in that boats cockpit?

Don't even think about it. I had a 4,000 watt, 240 V, propane fueled generator for home power outages. It was horribly noisy. Unless you can find a small 240V inverter generator, forgetaboutit.



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Old 02-09-2019, 12:32 PM   #29
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The start button is for the gen set. My original desires were to take the boat all over the Carribean and I would like to feel comfortable with reliability of my systems. I don’t want to have to run my engines to charge the batteries that run the boat. The boat is an express and IMHO was designed to be a lake/ICW cruiser and the concept of system redundancy, except for the engines, was not a primary thought. Now, I am intending to go on this initial 3 week journey and see if I really like the solitude(a real question as it would be much better with a partner, but that the current situation and because of age I am going now, hopefully) and the journey. Should that stand, then when I come back, a better designed boat for my mission will be in my short term future, see other posts.
Thanks for all of your help.
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Old 02-09-2019, 07:05 PM   #30
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How exactly are your shore power cords set up? In post #3 you say you have 50 amp but have 2 cords. That does not compute.
Since you have 240 and 120 VAC in your panel, I would guess you have a single 120/240v 50 amp cord. I can not think of a work-around to solve all of the 240V loads, especially since both battery chargers are 240V.
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Old 02-09-2019, 07:23 PM   #31
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[QUOTE=High Wire;739276]How exactly are your shore power cords set up? In post #3 you say you have 50 amp but have 2 cords. That does not compute.
Since you have 240 and 120 VAC in your panel, I would guess you have a single 120/240v 50 amp cord. I can not think of a work-around to solve all of the 240V loads, especially since both battery chargers are 240V.[/QUOTE

His boat comes with a reverse "Y" adaptor (twin 30 to one 50)
Please see section 4-10 of the manual for his boat that he linked in post #17.
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Old 02-09-2019, 10:27 PM   #32
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Phasing

What I was trying to learn is that the companion unit has a 30 amp ( physical receptive size) and if I had 2, could I phase them so that I am using two like in a home and could use my 2 x30 amp line on them to make 240 volts and I know that they would have to be in the proper phase configuration. What I think I gleaned is that I can t do it , it won’t work. I did buy a normal Honda and will have an emergency way with it and a separate 120 battery charger to charge the batteries. The boat has a 240 volt charger to charge the batteries. The 240 system is more efficient as in wiring but such a problem away from the dock with a gen failure. Thanks to all
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Old 02-09-2019, 11:26 PM   #33
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My boat is all 240 except for the 120 outlets

You started looking for a Honda portable generator to supply 240 volts. You need a European spec unit https://www.honda.co.uk/content/dam/...ableEnergy.pdf
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Old 02-10-2019, 06:31 AM   #34
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"Can you imagine the noise and vibration from one of those in that boats cockpit?"

Folks can either place them in the dink astern or hang them from a davit to quiet noise on board.

Either way the rest of the anchorage wont love ya!
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Old 02-10-2019, 07:03 AM   #35
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You started looking for a Honda portable generator to supply 240 volts. You need a European spec unit https://www.honda.co.uk/content/dam/...ableEnergy.pdf

Yes, it will produce 230V according to the specs, but since it has a three pin plug it doesn't have a neutral to make 115V, so you can't run your microwave or coffee pot from it.



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Old 02-10-2019, 09:36 AM   #36
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Yes, it will produce 230V according to the specs, but since it has a three pin plug it doesn't have a neutral to make 115V, so you can't run your microwave or coffee pot from it.
David
Frequency at 50 Hz could also be an issue.
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Old 02-10-2019, 10:45 AM   #37
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NEVER enough breakers!!!
We need to have the ability to isolate 'parts' assigned to "house batteries" Just MO
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Old 02-10-2019, 06:47 PM   #38
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Yes, it will produce 230V according to the specs, but since it has a three pin plug it doesn't have a neutral to make 115V, so you can't run your microwave or coffee pot from it.



David


Hmmm, do we know the iso xfmr does’nt have a secondary CT? It should.
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Old 02-10-2019, 07:06 PM   #39
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Diver Dave has an excellent point. It could be 240/240 .

It could be also be 240 - 120/240.

Only a real inspection will tell. Take a good hard look at the spec. plate and terminals and draw them or take a GOOD, CLEAR photo that can be blown up so we can see the markings.
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Old 02-10-2019, 07:34 PM   #40
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It should also have a 208v tap on primary.
When i say it should; i really mean, i would want it to, and these are very low cost option adders on a transformer.
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