wrightmi01
New Member
- Joined
- Oct 12, 2020
- Messages
- 7
I've been studying the posts and videos in an effort to design an off-grid system for a rural property I have. There is a barn with a small cabin-like area above and tools and equipment below. I'll be occasionally running power tools (e.g., table saw, bench grinder) in the working part of the barn. Along with lights, the cabin will have a few amenities like a small refrigerator, TV, etc and used for occasional weekend stays. I've done and energy audit and arrived at 3200 watt hours/day. I assumed running all the tools, lights, refrigeration, TV, and more for very a generous amount to arrive at that value. The panels will not have any shading to contend with and lowest temperatures are in the low 20's * F for a handful of days.
Using the resources available on this site, videos and posts I've arrived at *what I think* are appropriately sized fuses and wire sizes for the equipment and load. I would very much appreciate your thoughts and feedback to ensure I've designed a safe system. All of the components will be tightly grouped so wires runs will be very short. The solar wire run will be more more than 25'. I intend to add more panels in the future
Specific areas of concern:
- Ground: Is an earth ground from the AC breaker panel all I need?
- 300A fuse on the battery. It is a 280Ah battery, but with the 3000W inverter I will never pull more than 125A continuous. Have I got this right? Too big?
- Following the logic in the previous bullet, I sized the fuse off the inverter at 150A. Is that sufficient/safe? Fused for continuous current not peak, correct?
- I'd like to add a breaker/switch to isolate the panels, but have not identified one yet.
Using the resources available on this site, videos and posts I've arrived at *what I think* are appropriately sized fuses and wire sizes for the equipment and load. I would very much appreciate your thoughts and feedback to ensure I've designed a safe system. All of the components will be tightly grouped so wires runs will be very short. The solar wire run will be more more than 25'. I intend to add more panels in the future
Specific areas of concern:
- Ground: Is an earth ground from the AC breaker panel all I need?
- 300A fuse on the battery. It is a 280Ah battery, but with the 3000W inverter I will never pull more than 125A continuous. Have I got this right? Too big?
- Following the logic in the previous bullet, I sized the fuse off the inverter at 150A. Is that sufficient/safe? Fused for continuous current not peak, correct?
- I'd like to add a breaker/switch to isolate the panels, but have not identified one yet.