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New forecabin outlet from Victron inverter

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HardTack View Drop Down
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Joined: 26 May 2020
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Post Options Post Options   Thanks (0) Thanks(0)   Quote HardTack Quote  Post ReplyReply Direct Link To This Post Topic: New forecabin outlet from Victron inverter
    Posted: 07 February 2021 at 18:52
I'd appreciate any feedback on whether I'm going astray (no voltage pun intended) on a planned project.

My wife and I would like electrical power in the forecabin of our 2013 385 for recharging mobile devices. My thought was:

Run marine grade triplex AC wire (tinned) from unused power receptacle on AC end of Victron Phoenix 12/350 inverter. Put a commercial grade grounded male plug on the inverter side and follow and secure via the bow thruster/freshwater pressure pump wire run from the battery side to the wood frame in front of the fresh water tank and supporting the triangle berth. Install water resistant outlet box via an appropriate cut out. End the triplex AC wire run on an acceptable plug receptacle with ABYC approved ring terminal ends. This inverter is not supposed to be tied into the AC main distribution, so this would essentially be similar to the fixed "extension cord"-style installation for the single AC outlet I have under the nav desk.

1 - I am missing a big picture issue? Hanse didn't put any power plugs into the forecabin (the aft cabin has the DC plug). Although factory design has AC main distribution outlets in the galley and the head, is there some sensitivity to higher voltage plugs in sleeping spaces that I'm not seeing?

2 - I am still researching the triplex wire gauge, but I assume it's either 10/3 or 12/3. It's not much of a longer run than the existing AC run to the nav desk outlet. Does it require its own fuse (or perhaps I could get a fused plug for the inverter side .. or is this overkill with the Victron power management?

3 - Technically this isn't a head or a galley. Both of those, under ABYC, require GCFI outlets for AC outlets. In many ways, I like the profile of the single plug outlet already under the nav desk but I haven't found its exact equivalent from US suppliers and no single plug I've found is GCFI. Would I be asking for trouble with GCFI receiving from an inverter?

This seems like a relatively straight-forward job ... but those are always the ones that get you, and this is danger-zone for voltage so I'd like to "measure twice." The wisdom of this experienced crowd would be gratefully considered.

By the way, I did install a single-pole remote switch connected to the Victron. Now I can easily shut-off phantom power draw (it is a thirsty unit in standby mode) when I'm away from shore power and not using the inverter-supplied AC plug. No more going under the cushions and reaching around the AGM batteries.
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2021 at 20:45
Why not go with 12 volt USB style outlets? Most devices draw very little current, so using an AC outlet is overkill and introduces unnecessary complications. You can draw power from an unused circuit on your DC panel, or even tap a local circuit (lighting?) in the fore cabin. There are many USB outlets available that run off 12 volt wiring.
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Post Options Post Options   Thanks (1) Thanks(1)   Quote toholthe Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2021 at 21:04
i simply swapped out the reading lights with a new version with USB. Works like a charm. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote HardTack Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2021 at 21:32
You both make good points. I am aware of the irony of going DC to AC back to DC with all of the associated efficiency loss. For fast charging (say an iPad Pro), that's under 5 amps.

My initial idea was to "liberate" the unused AC out on the Victron and that an AC outlet might be more flexible for laptops bringing a higher load (and power management for AC inputs).

Do you have a vendor/link of the combo reading light you installed?


Edited by HardTack - 07 February 2021 at 21:33
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Arcadia View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2021 at 21:34
Just a heads up. Those reading lights with built in USB are very nice. However, they charge very slowly as they give very little current. For fast charging, you need a dedicated 2 amp USB port.
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Post Options Post Options   Thanks (1) Thanks(1)   Quote S&J Quote  Post ReplyReply Direct Link To This Post Posted: 07 February 2021 at 22:37
I fitted dedicated dual USB outlets in all cabins by piggybacking onto the wiring for the lights.  Only drawback is that they don't have power if you turn the lighting circuit off at the switchboard.
H458 #159 Primal launching May 2021
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Axel Quote  Post ReplyReply Direct Link To This Post Posted: 11 February 2021 at 17:17
That is what I did. It is working pretty well.
Hanse 385 #434 Nyanga 2
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