NEED HELP- WIRING CABIN:INVERTER PROBLEM

   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #1  

escavader

Veteran Member
Joined
Mar 1, 2005
Messages
2,301
Location
western maine
Tractor
bx-23 ,
HI
Ididnt know the answer so ill ask you folks,you always come thru for me.
Since 2000 we have been powering our remote cabin with a generator ,and an inverter-battery bank when the generator isnt running.We havent had to many problems,but recently due to the tangled mess of extention cords in the camp,i decided to install a 100 amp panel and some breakers.What i had before was a #10 under ground wire run from the shed to the camp direct to a plug in for the fridge.I had teed off from that outlet to another.Basically i have been running the fridge,a fan,a couple radios,and a coffee maker.[note only the generator would power thiscoffee maker ,it was too much for the 600 watt inverter.]
What i do is run a tank full of gas [2 hrs] thru the generator,and charge up the battery bank.Then when it runs out of gas,i unplug the line to the camp from the generatoroutlet and reinstall in the inverter and turn it on.running time depends on how hot it is and how much the fridge runs.On adverage i can go 8 hours until recharge time.
Like said before ,i wanted more than this tangled mess of cords,and thought id hook up a panel for safety reasons[having breakers.So i go to lowes buy a panel,some wire ,outlets etc100 amp main,ground rod etc.Being no stranger to household electricity,i get it all hooked up,and it works flawlesly with the generator,but when i turn on the inverter it immediately kicks to fault mode.:confused: Thinking this inverter might be too small to power this box,i shut off the main,and it still goes to fault.I unhooked the ground cable at the camp,same thing:confused: Weird part is every thing works fine with generator power feeding this line.I cant understand with the main off why the inverter kicks off.
When i put my electric tester in the inverter outlet,i have correct voltage ac same as the gen when its running 120or something.I have 13 something volts dc at the terminals on the back of the inverter.I tryed a radio direct in the inverter and it worked.I tryed a skilsaw and it wouldnt even start to turn it.Ihad nothing else up there to try,short of lugging the fridge to the generator shed:D .Although i have a new panel and new wiring,i am not trying to power any thing extra them before.
My wife said before all this ,the fridge had been acting funny,not running when it should etc,only on inverter not generator power.Could thes inverter have gone to pot?its a portawattz 600 modified sine wave type.If you think i should replace it what do you reccomend?
Im showing a bunch of pics,mabey you can see something screwy.I have not altered a thing in the generator shed,its all still as it was before i rewired the camp.Would appreciate any thoughts.
 

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   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #2  
isn't the output from the inverter one line hot and one line common? don't you have both of them feeding into the main breaker?
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #3  
This sounds stupid, but did you make sure you did not mix up your wires in the male plug end? It looks like the only thing that could cause that problem.
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #4  
randy41 said:
isn't the output from the inverter one line hot and one line common? don't you have both of them feeding into the main breaker?
I think he is combining both sides of the panel into one with that splice....correct?
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM
  • Thread Starter
#5  
randy41 said:
isn't the output from the inverter one line hot and one line common? don't you have both of them feeding into the main breaker?
no only the black.it is split where the electric tape is ,so i can power both lugs of my main.The white and bare come in and go to the grounding terminal.The big cable in the gr
grounding terminal goes to the camp ground rod.
ALAN
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM
  • Thread Starter
#6  
hockeypuck said:
This sounds stupid, but did you make sure you did not mix up your wires in the male plug end? It looks like the only thing that could cause that problem.
nope ,and this all works perfect when powered by the generator.
ALAN
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM
  • Thread Starter
#7  
hockeypuck said:
I think he is combining both sides of the panel into one with that splice....correct?
YES,I have to to power both sides of my panel
ALAN
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #8  
Does the inverter need to have the neutrals and grounds seperated, like a gfi? If you are courageous, take a wire and cross the neutral and the ground (on the inverter) and see if it goes into fault, make sure you get the right ones or you will get a nice light show.
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM #9  
I don't have a clear solution for you, but some suggestions.
Does the refrigator have a defrost cycle. If is does that can pull 900 watts to run the defrost heater. Obviously your inverter could not handle this. This does not really sound like the problem, since you have been running on the inverter earlier.

Do you have a ground at the generator, inverter, or battery bank. If so I would try to temporarily disconnect these grounds. I see you tried to disconnect the ground from the panel, a good thought. Two grounds might be a bad thing. The batteries (I believe) must be ungrounded.

Try running a temporary cord from the refrigator to the inverter and see if it will power it. Perhaps the frige is now pulling more power due to aging, locked cooling fan (if it has one) or something else.

What guage wire is now running from the inverter to the panel? Did you enlarge it, make it smaller, or longer. If it is smaller on longer then extra voltage drop could account for this problem. How long is this run?

I have a 1kW inverter which will not start my 22 cu ft. fridge. So they can be hard to start. How large is your fridge? Did you leave the fridge off for at least 2 minutes prior to repowering it. This gives the freon a chance to loose back pressure and it starts easier.

I hope this helps. I am not an expert here.
 
   / NEED HELP- WIRING CABIN:INVERTER PROBLEM
  • Thread Starter
#10  
hockeypuck said:
Does the inverter need to have the neutrals and grounds seperated, like a gfi? If you are courageous, take a wire and cross the neutral and the ground and see if it goes into fault, make sure you get the right ones or you will get a nice light show.
I dont know the answer,mabey your on to something.Iguess they would have been seperate running direct to an series of outlets like i had them.Now they are togeather.I could run one up to that vacant screw terminal bar on the right side.which one bare or white? and how do i ground that,seperate rod ,or do i need to?Mabey you hit the nail on the head,but camps 25 miles away,might not get to try til next weekend
ALAN
 

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