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Switch between split phase and single phase

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(@notmario)
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Joined: 3 years ago
Posts: 314
 
14 minutes ago, AquaticsLive said:

I am always monitoring the loads just one of those things we do for fun I guess. 

Okay next question reading the manual the input power has the option of 120 or 240 both say I can keep split phase out.  I am thinking on the input side I think it may be better to go with 120V since when I plugin at a job site or camp sometimes there is only a 15 Amp 120V outlet.  My thought is that may work better to use the charge function when I am on the road an extended period of time.  Any downside to having it setup that way?  I don't plan to use ATS since my system is already setup with a manual switching box which I plan to keep setup.  I can add a 120V inlet port just for the inverter to make it a clean dedicated source.

 

As i understand it, the disadvantage is you can only pull 25A @ 120v = 3000W compared to 25A @ 240v = 6000W.

What i would do is wire it [direct to inverter, skipping your switching box] to your 240v [presumably] 14-50p., and then rig a 5-15p/tt-30p neutral to leg 2 of a 14-50r.
You can then use both types, depending on whats available to you. The inverter will automatically detect which voltage you supply it, and you can continue using your full split-phase setup, no matter which type of power you have available at the site.

Of course this kind of adapter probably violates a bunch of electrical codes. But aside from having two completely separate input cables, i don't know a better way to do it.


   
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(@aquaticslive)
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Joined: 4 years ago
Posts: 249
Topic starter  
22 minutes ago, NotMario said:

The inverter will automatically detect which voltage you supply it

Ahh that is good.  I didn't know that part.  I can make that work then, I just wanted to make sure that I didn't need to let Sean know to set incoming to 120V.  The manual is outdated a bit on that part. 

 

"240v Split-Phase Setup
This setup is most common, and allows for the choice of either 120v or 240v AC input (please
specify the desired AC input voltage at purchase time). Output is 120 + 120 split-phase power."

 


   
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(@sid-genetry-solar)
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Joined: 4 years ago
Posts: 2883
 
3 hours ago, AquaticsLive said:

The manual is outdated a bit on that part. 

Sure is, unfortunately.  Trying to keep up with all of the various aspects of a product is...quite difficult, to say the least!  That manual is for 1.1r3...and I just released 1.2r0 a few days ago.

<a contenteditable="false" data-ipshover="" data-ipshover-target="/profile/133-notmario/?do=hovercard" data-mentionid="133" href="/profile/133-notmario/" rel="">@NotMario is correct; all GS inverters with a Rev. C control board (i.e. all of the ones sold this year, as well as the last part of last year) have an auto-switching AC input relay.  They will auto-detect and switch between 120v or 240v input modes upon power connection (unless you disable one of the 2 input modes--in which case they'll throw an "invalid AC input alarm").  You can set different current limits for 120v and for 240v input (i.e. shore power vs Grandma's extension cord!)

And yes, due to internal wiring and transformer winding limitations, maximum input current power on either 120v or 240v is the same 25A.  (Obviously, this results in half the watts in 120v mode.)


   
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(@aquaticslive)
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Posted by: @sid-genetry-solar
Sure is, unfortunately

No worries man and nice for you to confirm what @notmariosaid.  Its great we have this forum to share our knowledge.  Every question I came up with someone knows the answer.  You can't beat that from any other inverter company we are like a small family.


   
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