Hatteras Power Source

[dottieshusband]

For those with a Hatteras.. both sides of my boat have (2) 50 amp 240v inputs, and (1) 50 amp? 125v input... I've never used the 125v input... so my question is... what will work on the boat with only the 125v cord hooked up?... I'm wondering if I could hook up one of those portable lithium power supplies 3000w up to the 125v input and use it like an inverter to power the fridge when im.not on shore power or running a generator?

[rsmith]

You’d have to power it up and see what works. Our boat had 3 cords from the factory 2 50a 110v and a 30 220v just for the stove. I don’t know what brainiac at Hatteras came up with that but 90% of the marinas didn’t even have twist lock plugs then even up to the 90’s there were more crows foot plugs for 50a than anything else. Best you might find was 2 30a twistlocks and we all carried multiple adapters. I ripped it all out years ago and went to the single 50a 220v.

[skycheney]

Jul 31, 2023 21:14:24 GMT -5 dottieshusband said:

For those with a Hatteras.. both sides of my boat have (2) 50 amp 240v inputs, and (1) 50 amp? 125v input... I've never used the 125v input... so my question is... what will work on the boat with only the 125v cord hooked up?... I'm wondering if I could hook up one of those portable lithium power supplies 3000w up to the 125v input and use it like an inverter to power the fridge when im.not on shore power or running a generator?

It will run everything. It goes through the isolation transformer so it creates 240v. You just have half of the amperage of your normal 50a 240v inlet. I use mine when there is only a 30a 120v plug. I adapt to that 50a 125v inlet so I can run my 220v battery charger in the winter when in storage.

[rsmith]

I keep forgetting you guys have transformers.

[dottieshusband]

Thanks for the info! I've got a 50amp 125v input plug to a 3 prong 120v normal plug adapter... I see these 2000/3000 watt portable power supplies from Ecoflow, Jackery, etc with pretty good capacity, and there is a good spot right by my shorepower inputs.. I don't have an inverter, so I'm going to try a poor man's inverter... if I understand Sky, I'll just have to do power management at the panel. My fridge and TV are about all I use at night AC powerwise. I'll report back.

[tom5518]

Off the wall advice, but it's a good idea to inspect all wiring and contacts on the power inlets if you haven't. If in doubt, just replace them. If original they are old and it's often where fires on these old boats start.

[skycheney]

Aug 1, 2023 20:01:04 GMT -5 dottieshusband said:

Thanks for the info! I've got a 50amp 125v input plug to a 3 prong 120v normal plug adapter... I see these 2000/3000 watt portable power supplies from Ecoflow, Jackery, etc with pretty good capacity, and there is a good spot right by my shorepower inputs.. I don't have an inverter, so I'm going to try a poor man's inverter... if I understand Sky, I'll just have to do power management at the panel. My fridge and TV are about all I use at night AC powerwise. I'll report back.

Yes, configure the inlet switches to that source. Then watch your loads.

[badhattitude]

3000 watts isn't that cheap if I read it right.

[dottieshusband]

I got a 50amp 125/250 twist lock plug to a 3 prong adapter, but it will not plug into the 50 amp 120v inlet plug on the boat (the bottom of the 3) What am I missing here? The inlet is labeled 120v 50 amp. It looks like the 250v inlets, except for only 1 dog eared prong instead if 2. I searched the interweb for a 120v 50amp connector to 3 prong, but no luck? Is there such an animal?

[Avenger]

Sounds more like a 30A to me.