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--- opinion:frater_secessus:beginner_mistakes [2022/11/08 12:14]
frater_secessus [believing solar makes zero watts in rain, overcast, etc]
+++ opinion:frater_secessus:beginner_mistakes [2023/01/21 11:39]
frater_secessus [Failure to consider all loads]
@@ Line 174: / Line 174: @@
 ==== Failure to consider all loads ====
-Posts that include "my needs are simple, all I need are lights and a fan" develop, after questioning, into "Yeah, forgot the laptop.  And phone.  And tablet.  And toaster.  And coffee maker."
+Posts that include "my needs are simple, all I need are lights and a fan" develop, after questioning, into "Yeah, forgot the laptop.  And phone.  And tablet.  And toaster.  And coffee maker."  It's like [[https://youtu.be/2ZTdqh-a0tU?t=120|the scene from that Steve Martin movie]] where all he needs is an ashtry, then collects more and more stuff as he walks away.
 [[rv:build:cardboard|Living in a van mockup]], for example,  //forces// one to assess what one really needs.
@@ Line 223: / Line 223: @@
 ^ Time ^ Watts ^
 |6:02a |0w|
-|7:02a |15.9w|
+|7:02a |0w((panel voltage too low))|
 |8:02A |32.8w|
 |9:02A |48.7w|
@@ Line 235: / Line 235: @@
 |5:02p |48.9w|
 |6:02p |33.1w|
-|7:02p |16.2w|
+|7:02p |0w((panel voltage too low))|
 |8:02p |0w|
 See the //not enough panel// section below.
+==== believing 100w of panel will make 100w all year ====
+Solar harvest is greatly affected by the position of the sun in the sky (see above) and how many hours of that sun are available.  A crude generalization is that [[https://mouse.mousetrap.net/blog/2021-12-12-Summer-vs-Winter-solar-harvest-.html|winter harvest will be about half]] of summer harvest.
+==== believing 100w of panel will make 100w in all conditions ====
+w of panel makes 100w under lab (ie, perfect) conditions.  [[electrical:solar:output|Actual harvest]] will be much lower on average.
 ==== believing solar makes zero watts in rain, overcast, etc ====
@@ Line 289: / Line 298: @@
 Don't get me started on people **flat-mounting poly/mono flex panels to the roof of their van**.  Maximum cost, maximum power loss due to temp derating, //and// with the bonus of blasting re-radiated heat right through the van roof.  It's a crap trifecta.
-=== mixing different panels ===
-Mixing differently-rated panels will always be sub-optimal.  People  who know what they are doing can minimize the losses.  Beginners should either buy identical panels or run different types on separate controllers.
 === Panel types and controllers ===

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