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  • Post in thread: Inverter First Power on Checklist

    Thanks for the recommendation I think I will pick one up. https://www.harborfreight.com/cm1000a-1000a-t-rms-acdc-clamp-meter-64017.html
  • Post in thread: DC Volt reading from 6 panels, is it accurate?

    Now i see i should have done followed the right diagram and not the left.
  • Post in thread: Voltage Drop Calculation 230' & # of panels

    7S = 30.3V * 7 = 212.1 Volt 2P = 2 * 8.85A = 17.0 amp Voltage drop: 3.91 Voltage drop percentage: 1.84% Voltage at the end: 208.09 —--------------- 6S = 30.3V * 6 = 181.8 1P = 1 * 8.85A = 8.85 Voltage drop: 2.03 Voltage drop percentage: 1.12% Voltage at the end...
  • Post in thread: LV6548 Grid Assist no batteries

    Currently it is one inverter
  • Post in thread: LV6548 Grid Assist no batteries

  • Post in thread: LV6548 Grid Assist no batteries

    It is a large manual so many configuration items. Im glad you mentioned this, now i Know this exists
  • Post in thread: MPP 6548 selecting the correct AWG

    Yes the subpanel is fed on the bus bars. Its a 125 amp panel. The inverter is fed from a 40amp breaker. Now that you mention it I want to feed my new subpanel next to the inverter by the bus bars due to the fact it only has 8 spaces. I thought I needed to feed the new panel by a 240 V...
  • Post in thread: MPP LV6548V or LV 6548 - Is there a built in ATS Automatic Transfer switch

    Im not sure if I am using the correct terminology. Should I be calling this a no grid feedback? Or can I really call this off grid, grid tied?
  • Post in thread: 230 Ft run from Panels to Off Grid Inverter trying to minimize voltage loss

    I was going to go overhead in the air on my fence and then into the attic space which has paper insulation. I was wondering if I would need to put the solar wire in conduit since my insulation is paper. Im not sure if that is at risk of heating or sparking in odd circumstances.
  • Post in thread: Voltage Drop Calculation 230' & # of panels

    I use 240 / 220 off breakers in my Grid Subpanel to reduce the amp draw. I assume reducing amp draw on a solar supplied subpanel is the same benefit of a subpanel from an inverter. Are there other benefits of 240v split phase on a solar supplied subpanel?
  • Post in thread: DC Volt reading from 6 panels, is it accurate?

    I was under the impression under load was when I was pulling power from the power source. Like a motor running on AC power. Ex: when the motor is running its under load. So does this mean that a solar power in the sun is considered under load? I know there is power is available when the sun...
  • Post in thread: MPP 6548 selecting the correct AWG

    The MPP manual says to use 4 AWG for the AC Input and Output. I assume that is because they assume I will be building a 100 amp system. I have 1 inverter now. I have 6 AWG running from the main panel to my sub panel. I already ran a 6 AWG run off that sub panel for a second sub sub panel...
  • Post in thread: Voltage Drop Calculation 230' & # of panels

    This video by Ian shows runnung the LV6548 batteryless. I have the 6548V, checked the manual and I cant find an example running without a battery. I thought I saw a video on Youtube showing the need to charge the inverter with two wires before use. Anyone familiar with this? Pre-charge the...
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    Any experience with MPP Solar SUB mode. Solar then utility? My setup is no batteries, one LV6548V 12 panels 6S2P into one MPPT. I am looking at the programming menu: setting The inverter menu does show SUB mode and that is the setting I selected. The screen shows the Grid Icon and by pass...
  • Post in thread: 230 Ft run from Panels to Off Grid Inverter trying to minimize voltage loss

    Looks like the flicker issue has been resolved. https://diysolarforum.com/threads/resolved-eg4-6500ex-and-6000ex-lights-flickering-firmware.54956/
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    I turned off AC power and the inverter turned off. I took a reading with my multimeter from the PV array DC Isolator output and its 204.5 volts 6P2S is my array setup. Bad Connectors in the PV input on the inverter? I just tested the cables from the PV array isolator and the cables read 203.5 V
  • Post in thread: Should I power with 120v or 240v What are the benefits and pros and cons of running 120v vs. 240v under solar power?

    I have some lights that run either 120V or 240V I currently run them off the grid using 240V because the amp consumption is 1/2 compared to powering them off 120V. I will be installing an all in one inverter possibly the SPLIT PHASE LVX SERIES – LVX6048 https://www.mppsolar.com/v3/lvx6048/...
  • Post in thread: Inverter First Power on Checklist

    I am looking for a checklist to review prior to flipping the switch on my Solar Disconnect Switch for the first time. I am looking to check my work so I can see if I am making any mistakes that may cause damage to my inverter. I searched the forum and on Google but only found this: Off Grid...
  • Post in thread: Should I power with 120v or 240v What are the benefits and pros and cons of running 120v vs. 240v under solar power?

    That is the source of my confusion and the reason I am seeking more info. They use the same watts. I am assuming an inverter that powers 240V devices is for devices that only run on 240V. I am guessing in my case I dont really need 240V. What are the benefits of less resistance?
  • Post in thread: Voltage Drop Calculation 230' & # of panels

    I am located in Sunny Southern Cali. How low of temps are we talking about? I do plan on getting more panels and I do want panels 350 W +. At some point in the not too distant future I plan on having 2-3 inverters.
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    oops sorry about that. Yes according to the forum some users said my LV6548V will operate in SOB mode which will allow batteryless operation. Youtube Video of batteryless mode, This video is called batteryless mode but it is clear he has batteries attached. The above unit is LV6048. a DMM...
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    I dont want to rely on battery power. Is there a minimalist battery I can use (cheap) just to run the inverter off Solar and then Grid Backup?
  • Post in thread: LV6548 Grid Assist no batteries

    I want to build a Grid Assist system with no batteries that will switch to Grid power when the sun power is too weak to supply my needs. Is there a setting in the LV6548 that will allow this to happen? I thought the ATS functionality could handle this but can it without a battery?
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    oops sorry about that. Yes according to the forum some users said my LV6548V will operate in SOB mode which will allow batteryless operation. Youtube Video of batteryless mode, The above unit is LV6048. a DMM reading of PV voltages at the PV connection terminals of your AIO would be a good...
  • Post in thread: DC Volt reading from 6 panels, is it accurate?

    I am duplicating this diagram but with 6 panels. on both ends i am using a 4 in to 1 out cable to connect the end panels. But I am using only 2 of the four connectors
  • Post in thread: Anyone have experience with MPP Sub mode? Solar then Grid no Batteries

    This video is called batteryless mode but it is clear he has batteries attached. Youtube Video of batteryless mode,
  • Post in thread: Voltage Drop Calculation 230' & # of panels

    I am trying to figure out how many panels to put in a string. I have 20 San Tan 250 W panels. (specs below) and a MPP Solar LV 6548V (specs below) How many should i put in series and what gague wire should I run 230ft. Unclear on # of conductors and Load Current amps. Is my calculation good...
  • Post in thread: Inverter First Power on Checklist

    I am also wondering about any gotchas for which I may be unaware. Example: MC4 Connectors. We name MC4 connectors by the housing, not by the contact sheet, this is because the contact sheet of a male MC4 is female and the contact sheet of a female MC4 is male. BE VERY CAREFUL NOT TO CONFUSE...
  • Post in thread: MPP 6548 selecting the correct AWG

    I currently have a 50 amp at the main feeding a 40 amp 240 on the subpanel. Do you think I should have all 60 amp breakers one each for the main the sub and one for the subpanel attached to the inverter?
  • Post in thread: How many inverters do I need in parrallel?

    I am wondering since this unit has dual PV inputs and "high PV input 250V (Voc)" https://www.mppsolar.com/v3/splitphase-lv6548/ Does this mean that I can do up to 6 of the below panels per input? My confusion is these show 37.6 Open circuit voltage (VOC). Does the spec "high PV input 250V...
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