Underground to generator shed

wellbuiltwellbuilt Solar Expert Posts: 406 ✭✭✭
Hi all , quick question 
 I need to run a wire from my inverter to my generator shed , it’s about 35’ thru the garage and out the wall . 
 I need to run under ground 65’ to the shed  , could I run this wire in conduit or should I buy direct  burial cable , I only want to do this once . 
 I have a roll of 6g wire on hand .
 I also want to run some 12 /2 so I have some light and power out 
 I’m assuming I need some kind of a lead to run from the box on the wall in the shed to the generator and maybe a  Power disconnect on the wall of the shed out side                                                           
 Thanks in advance John 
Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .

Comments

  • mike95490mike95490 Solar Expert Posts: 8,434 ✭✭✭✭✭
    I would use conduit, it's easy to work with, has fittings, and you don't need special cable.    The hard part is digging the trench.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
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  • mcgivormcgivor Solar Expert Posts: 3,126 ✭✭✭✭✭
    I too would use conduit as long as the total included bends are less than 360° between junction boxes.
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery bank 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.  
    5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
  • Wheelman55Wheelman55 Registered Users Posts: 72 ✭✭✭
    As long as you are going to dig a trench, put in two runs of conduit. It is cheap and you just never know what you’ll want to run next...more electric, comm cables, other...
    Building Off-Grid in Terlingua, TX
  • wellbuiltwellbuilt Solar Expert Posts: 406 ✭✭✭
    So I can run regular 12/2 and 6 /2   wire with ground ,  Do you think that would pass ny state   Electrical inspection  ? 
     Around here every one seams to run  individual wires black white red and green ? 
      The reason I’m  concerned about the type of wire  Is every time I dig up a conduit it’s full of water ? 
     There is condensation plus water gets in the pipe when the guys are working on it . 
      How  large a generator can I run on a 6 g wire at 100’  
     I have a 2800 watt Honda now but may move up to a 10000 watt diesel with 240 volt  I’m not sure what to do with the extra leg of the genarator
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
  • mcgivormcgivor Solar Expert Posts: 3,126 ✭✭✭✭✭
    Generally speaking, if there are two separate sources they shouldn't be in the same raceway, this becomes a little  confusing as one won't be energized whilst the other is, to avoid the ambiguity running each in a separate conduit would eliminate the confusion as both are physically isolated, either way a ground bonding is required in each conduit of a non metallic raceway, assuming PVC
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery bank 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.  
    5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
  • Raj174Raj174 Solar Expert Posts: 704 ✭✭✭✭
    @wellbuilt
    The 10000 watt genie is capable of about 42 amps per leg at 240 volts. I believe a 6-2  romex type cable is rated at 55 amps. At 100 feet there is less than 2% voltage drop. Probably not very efficient to load down only one leg of a 240V generator. Might be better to stick with a 120V model. Do you need that much power?

    Rick   
    3600W PV, MNE175DR-TR epanel modified, MN Classic 150, Outback Radian GS4048A, Mate3, 54.4V 195AH LiFePO4 no BMS, 4500W genset.
  • wellbuiltwellbuilt Solar Expert Posts: 406 ✭✭✭
    Hi rick ,  I probably don’t need that much power , but I really like the kabobs equipment and there are a lot of 10000 watt kabobs diesels around here for sale in good shape for short money . 
      So how large a genarator could I use on the 6g wire, I know I dident   Guess the size of the wire , I must of got the information some where , I may of figured to run one leg of the 240 volt to the inverter and the second to power some 240 volt equipment .
     Let me ask you this , is the 6g wire large enough to cover the serge ratting of my 36/48 out back inverter , So 7200 watts ? 
      I use the 6g wire from the inverter to my panel 3600 watts x2 7200watt serge  it’s looking like my wire is to small for the inverter load .😳
          Do I need to change out the wire?                       Thanks for the reply john
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
  • Raj174Raj174 Solar Expert Posts: 704 ✭✭✭✭
    Yes, it's big enough. The 6-2 cable is more than adequate for your needs. I suppose you could use a 240 to 120 volt transformer if you want to go with a 240 volt generator. 
    3600W PV, MNE175DR-TR epanel modified, MN Classic 150, Outback Radian GS4048A, Mate3, 54.4V 195AH LiFePO4 no BMS, 4500W genset.
  • wellbuiltwellbuilt Solar Expert Posts: 406 ✭✭✭
    I just haven’t seen any large 120volt genarators? 
    Ill just use the wire that I have  for now.
    and dig in a larger wire if I need it when I live there full time.
      The digging is the easy part for me .   Thanks every one for the help John 
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
  • Coach DadCoach Dad Solar Expert Posts: 154 ✭✭
    wellbuilt said:
    So I can run regular 12/2 and 6 /2   wire with ground ,  Do you think that would pass ny state   Electrical inspection  ? 
     Around here every one seams to run  individual wires black white red and green ? 
      The reason I’m  concerned about the type of wire  Is every time I dig up a conduit it’s full of water ? 
     There is condensation plus water gets in the pipe when the guys are working on it . 
      How  large a generator can I run on a 6 g wire at 100’  
     I have a 2800 watt Honda now but may move up to a 10000 watt diesel with 240 volt  I’m not sure what to do with the extra leg of the genarator
    No you can not use "regular 12/2 and 6/2" in the conduit when running it underground.



  • wellbuiltwellbuilt Solar Expert Posts: 406 ✭✭✭
    Hi coach dad , that what I was afraid of I’ll have to get some more wire
    Out back  flex power one  with out back 3648 inverter fm80 charge controler  flex net  mate 16 gc215 battery’s 4425 Watts solar .
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