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post #31 of 36 Old 06-19-2013
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Re: EFI Outlet in cockpit.

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Originally Posted by Rasputin View Post
Huge thanks for all the input to this thread. Sorry for the delay in stating that. Also sorry for not responding. Business travels have kept me from the boat.

- The cockpit EFI is the only one on the boat. EFI is a standard $15 outdoor unit from Home Depot.

- That outlet does have 2 or 3 other outlets in its chain. The boat overall has maybe 15 outlets. All work well under all power options.

- She's a 50' center cockpit with a super high freeboard, well covered and rarely wet. It would take a hose or a downpour to get water on it. I just thought an EFI would be "safer" outside.

- That outlet originally was a standard unit (like all below deck). It worked well with shore power, gen and inverter. It worked full time as other outlets did. There has been no extra wiring to route around it for any special reason or safety concern.

- Battery bank is 6 - T125s powering Xantrex 3000. Shore is 30w.

EFI simply won't power on anything other than shore but other outlets in chain and on boat continue under all options.

Weird. I guess I could try a 3rd EFI. ???

If the green ground that terminated at that EFI box is bad / not grounded on the boat but only at the 30A inlet/galvanic isolator, that would suggest that a regular outlet would work but an EFI wouldn't when not at shore. Agree?

I'll have to call the electrician. ;-)

Does the GFCI trip when you connect a load or can you not reset it even with no load?
If the GFCI can be reset but trips after you connect a load then you have a power source problem.
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post #32 of 36 Old 06-19-2013
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Re: EFI Outlet in cockpit.

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Originally Posted by ebs001 View Post
This is not correct. The GFCI receptacle will trip with a 5 mA ground fault. Any GFI measures the amperage difference between the hot and the neutral. What it won't do is trip the breaker should the hot ground out and there is no other path to ground. The fact that it will trip on a ground fault is why the electrical code allows a GFCI receptacle to be installed to replace a two prong outlet found for example in knob and tube wiring.
You are probably correct - I didn't try tripping it. My point is that the ground, connected or not, will not stop the GFI outlet from functioning like a standard outlet.

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Living aboard in Victoria Harbour
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post #33 of 36 Old 06-19-2013 Thread Starter
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Re: EFI Outlet in cockpit.

I cannot reset it, even with no load. The reset and test buttons have no effect (when off of shore power). I'm yet to stick my voltage meter in it when not on shore power. I'll look this week.


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post #34 of 36 Old 06-19-2013
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Re: EFI Outlet in cockpit.

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Originally Posted by Rasputin View Post
I cannot reset it, even with no load. The reset and test buttons have no effect (when off of shore power). I'm yet to stick my voltage meter in it when not on shore power. I'll look this week.
So it works on shore power, then you switch to inverter and it pops? Or does it remain set, but you have no power, which would be really odd?


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post #35 of 36 Old 06-19-2013 Thread Starter
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Re: EFI Outlet in cockpit.

I believe it pops but I'll head down today or tomorrow, plug in a light then disconnect shore and see to be sure. I assume it pops becasue I have to reset it when I reconnect to shore.


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post #36 of 36 Old 06-19-2013
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Re: EFI Outlet in cockpit.

In post #17 GFCIs compatable with this inverter are listed. Many inverters are wired with a floating neutral and thus have voltage between ground and neutral. It would appear that not all GFCIs like this - they trip. It would appear that you will need to install one of the recommended GFCIs.

Note that the your Honda 2000 is an inverter , also with a floating neutral.
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efi , inverter , outlet , power , shore

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