Differences

This shows you the differences between two versions of the page.

--- electrical:solar:sizing [2019/02/08 12:44]
frater_secessus [Sizing a solar installation]
+++ electrical:solar:sizing [2019/02/08 13:03]
frater_secessus [maxxed system]
@@ Line 2: / Line 2: @@
 ====== Sizing a solar installation ======
 Sizing **residential off-grid solar configurations** is relatively easy: calculate power needs in the worst case scenario (December in a particular geographical area)((https://web.archive.org/web/20110906013732/http://www.solarpowerforum.net/forumVB/solar-energy/1793-basic-off-grid-solar-design.html)) and pay for it.
-  - worst case scenario loads (the max loads you will apply in any 24hr period)
+  - worst case scenario [[electrical:12v:loads|loads]] (the max loads you will apply in any 24hr period((or at any given time, if you plan to run heavy loads)))
-  - worst case scenario sunlight, usually December in your geographical area
+  - worst case scenario sunlight, usually December in your geographical area due to shortest daylight hours
-  - these factors will tell you the **cost of the install**
+  - days of reserve (ie with no solar charging) you want
+  - whether or not you have access to other forms of charging: [[electrical:shore_power|shore power]], [[electrical:12v:alternator|alternator]], [[electrical:generator|generator]]
+  - These factors will tell you size of the system needed.  If the system you need will not physically fit on/in your vehicle, you will have to take [[electrical:solar:sizing#maxxed_system|a different approach]].
-This approach also works for 'dwellers building **relatively minimal solar power systems** where one is not using all the available roofspace for panels.
-In **'dweller solar configurations** the order of sizing calculations may be different due to space limitations.  Few of us will be able to fit all the solar panels we need to run every [[electrical:12v:loads|load]] on our wishlist. In this case we size our systems for the maximum amount of panels we can fit in the space allowed.  This might be what fits in open space on our roof, or how much portable panel we are willing to deploy.
-  - max solar wattage you can install (or afford)
-  - whether your have access to other forms of charging: [[electrical:shore_power|shore power]], [[electrical:12v:alternator|alternator]]
-  - max battery capacity you can charge fully/consistently (or afford, or install)
-  - these factors will tell you what kind of loads you can run.
@@ Line 179: / Line 169: @@
 If Joe is willing to [[#augmenting_solar|augment his solar with another charging source]] he can significantly reduce panel and charge controller requirements.  The battery bank would stay the same;  it just gets filled by more than one source.
+===== maxxed system =====
+In **'dweller solar configurations** the order of sizing calculations may be different due to space or budget limitations.  Few of us will be able to fit all the solar panels we need to run every [[electrical:12v:loads|load]] on our wishlist. In this case we size our systems for the maximum amount of panels we can fit in the space allowed.  This might be what fits in open space on our roof, or how much portable panel we are willing to deploy.
+  - max solar wattage you can install (or afford)
+  - whether your have access to other forms of charging: [[electrical:shore_power|shore power]], [[electrical:12v:alternator|alternator]]
+  - max battery capacity you can charge fully/consistently (or afford, or install)
+  - these factors will tell you what kind of loads you can run.
 ===== real solar installations =====
 See the [[electrical:solar:builds|self-reported capabilities of real life configurations]].

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools