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electrical:solar:nonessential [2020/01/13 11:26]
frater_secessus [when to run opportunity loads] 		electrical:solar:nonessential [2020/07/08 11:13]
frater_secessus [timing opportunity loads]
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 In practice, actual loads may be heavier in the daytime (as when working with power tools) or at night (as when watching movies or running a forced-air furnace).   In practice, actual loads may be heavier in the daytime (as when working with power tools) or at night (as when watching movies or running a forced-air furnace).  
  
-Due to the nature of battery charging there are better times and worse times to run non-essential loads.  If done attentively (or automatically) **one can run electrical loads that do not affect the battery's  +If loads are applied attentively (or automatically!) **one can run electrical loads that [[electrical:solar:offthepanel|do not affect]] the battery bank's  
-[[electrical:depth_of_discharge|State of Charge]]** at all.  This is especially true for Lead-Acid chemistries that do not take much current in [[electrical:12v:charging|Float or late Absorption stages]].+[[electrical:depth_of_discharge|State of Charge]]** at all.  Additionally, consuming loads at the right time can also increase the health and longevity of lead batteries.((by keeping them at 100% SoC more of the time))
  
 ===== how much surplus current is there? ===== ===== how much surplus current is there? =====
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 There will generally be more "surplus" power available when using MPPT charge controllers v. PWM,((http://forum.solar-electric.com/discussion/comment/372165#Comment_372165))((http://forum.solar-electric.com/discussion/comment/250746#Comment_250746)) though the difference is less dramatic during periods one would run opportunity loads (see [[electrical:solar:nonessential#when_to_run_opportunity_loads|below]]).  Siphoning off power can actually **help PWM controllers run cooler** by reducing the ON-OFF switching activity that generates heat. There will generally be more "surplus" power available when using MPPT charge controllers v. PWM,((http://forum.solar-electric.com/discussion/comment/372165#Comment_372165))((http://forum.solar-electric.com/discussion/comment/250746#Comment_250746)) though the difference is less dramatic during periods one would run opportunity loads (see [[electrical:solar:nonessential#when_to_run_opportunity_loads|below]]).  Siphoning off power can actually **help PWM controllers run cooler** by reducing the ON-OFF switching activity that generates heat.
  
 +[[electrical:solar:overpaneling|Overpaneled]] systems have even more excess power available. 
 ===== when to run opportunity loads ===== ===== when to run opportunity loads =====
  
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 The most precise way to do it **automatically** is to use a charge controller which turns on the LOAD output only when the batteries are in Float stage.  Charge controllers with this feature tend to be expensive. The most precise way to do it **automatically** is to use a charge controller which turns on the LOAD output only when the batteries are in Float stage.  Charge controllers with this feature tend to be expensive.
  
 +You can also build a Pi or similar that talks to the controller over its communication port/protocol and checks when the controller is in Float.
 ==== LVD only ==== ==== LVD only ====
  
electrical/solar/nonessential.txt · Last modified: 2023/10/18 19:08 by frater_secessus

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