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Re: Partial off-grid system design questions....
Yep--You are correct. P=I*V ... You double V, you get 2x more power. Note, some of the other controllers do have other limitations (working voltage input and output; and overall power)--So always ref…1 · -
Re: Partial off-grid system design questions....
Refrigerators (and freezers) are what move you from a "small system" to a medium size... A typical efficient fridge/freezer runs 365 to >450 kWH per year--Or over 1.0 kWH per day. I woul…2 · -
Re: PV Array Sizing
It is why I like to do the naked calculations in the open... When you do spread sheets and web calculators--The details of "why" you do things get lost. You can program the calculations int…1 · -
Re: battery charging voltage
From this comment: http://forum.solar-electric.com/discussion/comment/354210/#Comment_354210 I ran across this page on why different types of batteries have different starting s.g. fills... Is pretty…1 · -
Re: An Australian dilemma regarding smoke detectors / alarms
Talk with an alarm company (dc backup)? Very small ac inverter for alarms only (if over 12vdc battery back, difficult to find)? Get the occupancy permit then disconnect and do battery based alarms. W…1 ·
