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--- electrical:solar:synopsis_puzzle2 [2017/08/01 18:10]
frater_secessus [converters]
+++ electrical:solar:synopsis_puzzle2 [2017/08/02 00:28]
frater_secessus [charge controllers]
@@ Line 90: / Line 90: @@
 ===== charge controllers =====
+Get an oversized [[electrical:solar:charge_controller|3-stage charge controller]] with an equalization function.
+Bob prefers Morningstar.
+===== MPPT boost controllers =====
+They work but the gains are found in specific scenarios like deeply discharged batteries.  The gains are more likely to be 5%-10% over PWM.
+===== wiring =====
+"Big wire" is cheaper than panels for a similar gain in power.
+Wiring from panels to controller is important;  wiring from the controller to batteries is critical.
+Use stranded wire, the type (building, automotive, welding) is less important.  Use UV-shielded wire for external runs.
+> "big wire is there to limit voltage drop, not to carry amps." -- HandyBob
+===== inverters =====
+Use a properly sized [[electrical:inverter|inverter]] for the job;  this may mean owning more than one inverter.
+MSW is fine unless you know you have something that needs PSW:  "residential refrigerators, washing machines, some air purifiers, some desk top computers and Craftsman brand battery chargers."
+"Soft start" inverters work work well.
+Many inverters have a high voltage disconnect (Vhvd) of 15v.  Temperature compensated charge controllers can hit 15v easily.
+===== installation considerations =====
+Install the charge controller near the batteries.
+Locate solar panels so they are not shaded.
+===== fusing =====
+Bob prefers fuses to automotive-style circuit breakers.
+Avoid fuse holders with springs in them.
+Fuse every positive wire within a few inches of the battery.

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