All good comments. I agree nothing like a good inverter for the hair dryer. Beats firing up the gen. This subject installation still has some question about how it functions. Another discussion would be the galvanic isolator. If one has the isolator installed and the inverter, as it should , has the ground and neutral connect, we just bypassed the isolator. That is if it is wired directly to the AC panel without the bypass option. Even with the inverter turned off, the ground can pass DC current off the boat. Lots to think about for sure. ABYC A-31 and A-32 is a good read on this matter.
Sent from my iPhone
On Jan 3, 2022, at 11:46 AM, sentoa-request@lists.sentoa.org wrote:
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Message: 1
Date: Mon, 3 Jan 2022 16:46:01 +0000
From: David Cheyette david@cheyette.com
Subject: [Sentoa] Re: Sentoa Digest, Vol 127, Issue 26
To: "South East Nordic Tugs Owners' Association (SENTOA)"
sentoa@lists.sentoa.org
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I totally agree with Jim. We added a Magnum Inverter/Charger to our NT 37-100 (2004) boat. It has a separate panel for 120V outlets and the microwave. Our hot water/built in King heater/water maker (big loads) are not on the inverter panel – for all the reasons previously stated.
In our case – the vessel was pre-wired for the optional inverter, and we had an electrician install the Magnum and verify the configuration. One of the best upgrades we put on the boat.
David Cheyette
Maisy
NT37-100
Anacortes
From: Jim Waskowich via Sentoa sentoa@lists.sentoa.org
Sent: Monday, January 3, 2022 7:58 AM
To: South East Nordic Tugs Owners' Association (SENTOA) sentoa@lists.sentoa.org
Cc: Jim Waskowich jwaskowi@gmail.com
Subject: [Sentoa] Re: Sentoa Digest, Vol 127, Issue 26
We've owned 3 power boats that had factory optioned inverter/chargers (including our NT-37.) In each case, the inverter only powered the 120vac outlets and the microwave. If shore power was present, shore power was passed through and powered those loads. If shore power was lost, the inverter could either automatically or manually power the loads depending on how it was set.
If the inverter was wired to be able to power all the AC loads it could easily or accidently be overpowered. (Think large switched loads like the water heater, electric cooktop, aircon's, etc.) This would be a concern not only for the inverter, but also the loads. I can't speak specifically to the NT-32, but if the inverter was originally offered as an option then it would be likely that the distribution panel was set up with a jumpered "inverter bus." Easy enough to check on the (excellent) NT schematics and utilize if present.
Jim Waskowich
ex owner 2006 NT37, Grand Adventure
On Mon, Jan 3, 2022 at 8:42 AM Herb Nickles via Sentoa <sentoa@lists.sentoa.orgmailto:sentoa@lists.sentoa.org> wrote:
Brig,
I didn’t write the article. Mike Stern wrote the article. You can contact him at eandmstern@gmail.commailto:eandmstern@gmail.com for answers to your questions. However, the way I understand his article is that he fed the AC out from the inverter into the breaker panel where his generator was connected (generator previously removed). So whatever AC was run by the generator would now be run by the inverter (probably all of the AC circuits).
I installed a Xantrex 2000 on 32-225 in 2008 because the previous owner didn’t install a generator. At the same time, I installed solar panels, solar charging unit and additional house batteries. I don’t quite remember the details (I don’t own the boat anymore) but the Xantrex shut off automatically when shore power was connected. I didn’t need to throw any switches.
Herb
On Jan 3, 2022, at 7:32 AM, Captain Brig via Sentoa <sentoa@lists.sentoa.orgmailto:sentoa@lists.sentoa.org> wrote:
Herb
Thanks for all the details. I have a few questions. Did you supply inverter power to the complete AC System on the vessel and you turn on the breaker you wish to power? Does this newly installed system supply power, or can it, when the shore power is connected. Another words, can both AC shore and inverter power supply service at the same time or do you have to make sure the inverter is off while on shore? Was the inverter you installed a pass through model?
Stay Well Brig
Www.yourcaptainconcierge.comhttp://Www.yourcaptainconcierge.com
On Jan 3, 2022, at 3:30 AM, sentoa-request@lists.sentoa.orgmailto:sentoa-request@lists.sentoa.org wrote:
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Message: 1
Date: Sun, 2 Jan 2022 17:06:54 -0500
From: Herb Nickles <herb.nickles@gmail.commailto:herb.nickles@gmail.com>
Subject: [Sentoa] Inverter Installation Instructions on SENTOA Website
To: SENTOA <sentoa@lists.sentoa.orgmailto:sentoa@lists.sentoa.org>
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Dear Subscribers:
I just posted a new article in the Maintenance Tips section of the SENTOA website. The article was submitted by Mike Stern (Unwind, 32-254) who installed a 2000 watt Xantrex inverter in lieu of a generator. The article includes bulleted instructions, clearly labeled photos and a wiring diagram.
http://sentoa.org/maintenance_tips/inverter.html http://sentoa.org/maintenance_tips/inverter.html
Herb Nickles
SENTOA Listserver Administrator
Unless the inverter install is totally botched up there will be no impact on the galvanic isolator(s).
The galvanic isolator is always connected in the green grounding wire right before the shore power inlet. If it is (electrically) somewhere else it will not be effective. Any connections made to the inverter must be on the boat-side on the galvanic isolator, not the shore-side.
Gene Fuller
Yorkshire Rose
NT 37-136
Punta Gorda, FL