8.4 Kw Timber Framed Solar System Finished And Producing Power
Kris Harbour Natural Building・30 minutes read
The solar system upgrade for a workshop and business involves meticulous installation of cables, panels, and charge controllers for redundancy and efficiency. Despite the initial cost, the system is expected to provide a reliable power source and pay for itself in a few years, proving to be a valuable asset for future business endeavors.
Insights
- The solar system upgrade involves a meticulous setup with dual-string cables for redundancy, lead flashing for watertight seals, and stainless steel brackets for secure panel mounting, ensuring efficient power generation with minimal losses and easy maintenance.
- The completion of the project within six weeks at a cost of under £7,000 showcases a cost-effective investment that can potentially pay for itself in just a few years, offering a reliable power source generating 40 kilowatt hours daily, thus serving as a valuable asset for future business growth amidst global uncertainties.
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Recent questions
How is the solar system being upgraded?
With a nearly 10 kilowatt system.
What is the purpose of the lead flashing?
To create a watertight seal between panels.
How are the panels mounted for maintenance?
In rows with internal clips for easy removal.
What is the future plan for the solar system upgrade?
To upgrade to 48 volts for increased capacity.
How much electricity can the system generate daily?
40 kilowatt hours, costing £20.
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Summary
00:00
Solar system upgrade for workshop and business
- The solar system is being upgraded to a nearly 10 kilowatt system to power a workshop and business.
- A trench is being hand-dug for a 4-core 16mm squared cable to run from the shed to the panels.
- The cable will be split into two separate strings for redundancy, with each string going to a different charge controller.
- The system will run at about 200 volts with 25 amps down the 16mm cable, minimizing losses.
- Lead flashing is being used to create a watertight seal between panels without a roof on the frame.
- Panels are being mounted in rows with internal clips for easy removal and maintenance.
- Expansion joints are added to the lead flashing to account for thermal expansion.
- Stainless steel brackets are made to secure panels in corners inaccessible for maintenance.
- Different strings of panels are connected to separate charge controllers for grid redundancy.
- Cables are run, daisy-chained, and connected to a combiner box for final system setup.
27:32
"Electrical Wiring and Charge Controller Installation"
- The task involves finishing trunking and completing final wiring.
- Two sets of cables, positive and negative, from five strings are being connected.
- Cables are wrapped with thick tractor inner tube for UV protection.
- Specific wiring sequence: string one positive, string two positive, and so on.
- Two sets of cables: 250 volts for big charge controller, 150 volts for small charge controller.
- Labels and connections are checked, ensuring correct polarity.
- Bus bars are being created to organize terminals and tidy up connections.
- Charge controllers are limiting current to around 35 amps, providing about a kilowatt of power.
- Plans to upgrade to 48 volts to double capacity and maximize panel output.
- Future project involves timber framing for a hydroelectric system for a customer.
45:03
"Efficient, Cost-Effective Solar Power System"
- The individual has made adjustments to their power system to prevent overheating, creating spaces away from wood for insulation. They can generate 40 kilowatt hours of electricity daily, costing £20 at current prices, providing a reliable power source amidst global uncertainties.
- The entire project, completed in six weeks at a cost of just under £7,000, includes all necessary components like solar panels, cables, and connections. Despite the initial investment, the system is expected to pay for itself in a couple of years due to the significant power output, serving as a valuable asset for future business endeavors.
