vas's latest activity

  • vas
    vas reacted to Irish Rover's post in the thread Solar Panel Efficiency? with Like Like.
    Yeah. Our plan was to be up and running for that time today but there was a delay getting MC4 connectors. We'll see tomorrow. We opted...
  • vas
    vas replied to the thread Old dogs on boats.
    Bouba, how old is the real Bouba - not you!
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    just note what the victron app reports at between 1pm -2pm that's the peak right now.
  • vas
    vas reacted to Irish Rover's post in the thread Solar Panel Efficiency? with Like Like.
    We got the panels back working just before 15.30 this afternoon. They were producing 490/495W There was far less fluctuation in the...
  • vas
    vas replied to the thread Old dogs on boats.
    yep pics are fine... we find daughter's dog a 5.5kg little thing is starting occasionally struggling coming up the 6steps from the...
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    my mistake! Open circuit voltage is the right term I've got 70mm2 cables from lifepo4 bank to bus bar @24V, dont even get warm when 2kW...
  • vas
    vas reacted to PaulRainbow's post in the thread Solar Panel Efficiency? with Like Like.
    The 60mm cable is the original cable from the batteries to the main positive busbar. It's not big for a motorboat, especially at 12v...
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    2.5mm2 is thin, 6mm2 is good, I'd stick to series tbh (but I guess it's going to be reasonably easy to try and swap over) What's the...
  • vas
    vas reacted to PaulRainbow's post in the thread Solar Panel Efficiency? with Like Like.
    He has 2x625w panels, in series to a single controller. At max that would be circa 100v at 15a, with a 7m cable run of 1.5mm cable, you...
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    but Paul, wont be 100V if in parallel will be 50V. I'm assuming these panels are 48-50V OC like mine are but maybe wrong. OP has to...
  • vas
    vas reacted to PaulRainbow's post in the thread Solar Panel Efficiency? with Like Like.
    If you change to parallel you double the current, so you have, at max, 100v 50v @ 30a = just over 5v drop !
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    hm, when calculating voltage drop on DC, don't we double the distance as in AC or I got that wrong? no matter what if cable is that...
  • vas
    vas replied to the thread Solar Panel Efficiency?.
    what do the experts think? isn't 1.5mm2 (AWG15?) a bit thin for a 14m trip of 90VDC @12-15A (at summer peak)? If I got my numbers...
  • vas
    vas reacted to PaulRainbow's post in the thread Solar Panel Efficiency? with Like Like.
    Easy to test if the batteries are taking all of the solar yield when in bulk, or at any other time. Watch the output from the controller...
  • vas
    vas reacted to Irish Rover's post in the thread Solar Panel Efficiency? with Like Like.
    Yes, on the flybridge hardtop 2.3 x 1.15 6/7 m and 1.5mm² cable No obstructions worth mentioning, all done in the marina, nothing...
Top