Announcement

Collapse
No announcement yet.

basic questions for neewbie setup

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • basic questions for neewbie setup

    hello
    we want to build a simple off grid solar set up for a small farm house to run some led lights and keeping some simply 12v and 5v devices running a few hours a day.. we found a good deal on two 100watt 24v panels. the label on the panels say that they have a 5amp rating.. so according to our calculations 5amps/h * 5 sunhours per day= 25amps per panel per day.. 2 panels would be 50amps @ 24v.. if we only need 12v does this mean that we would have 100ams? our base of this idea is amp * volt = watts and watts / volt = amps so that would be 50a * 24v = 1200w /12v = 100a? would this be correct?

  • #2
    Hello fotorebelion and welcome to Solar Panel Talk.

    You are going about this the wrong way. First you determine what your daily watt hour loads are then you size your battery system. Then you size your solar panel & charging system. Not the other way around no matter how "good a deal" it sounds. You can't do the math back wards like you are trying because it will not work out that way. Mainly because the number of "sunhours" changes throughout the year.

    Comment

    Working...
    X