# Tag Info

1

Your calculations are a bit off since each battery is 12V, the total energy capacity is 12 * 115 = 1280 Watt-hour each, or 5520 Watt-Hour total for 4 of them. I couldn't find specs online for your solar panels, but am going to assume that the 10.55volts. 30.48 amps spec is a little optimistic (that's 320 watts). Let's assume 230W each in peak sun, so that'...

1

When dealing in watts and watt-hours, it helps to get your math right if you compute a single unit's capacity, then simply multiply by the number of units. E.G. Go 115AH x 12 (not 24) volts to get 1380 watt-hours per battery, then multiply by the number of batteries, 1380WH x 4 = 5520WH whole pack. I have no idea where you got 54V for 6 ra-220 panels in ...

2

Adding this answer to comment on the chicken wire approach. Two points: The shading by the chicken wire isn't as small as it might seem. The effect the wire has on the efficiency will vary with sun angle. To calculate the % area shaded we need to know the opaque proportion of the total area of the chicken wire. Instead of doing this geometrically, it ...

0

In an analogous situation the approach taken is the following form of social engineering: Thus: Provide some decoy or other point of interest that the monkeys would prefer, rather than your roof. The kids will then throw rocks at monkeys which are not on your roof. So its a "fly" provided to both groups of pests.

0

If you'll excuse my primate drawing skills, since we're talking about our theoretical distantly-related cousins (I must admit that they are generally better climbers than we are), monkeys do have their own physical limits. Having this in mind, if you re already planning to spend some money, this is what I suggest: Basically you can place metal (or other ...

2

Am I missing anything? Is there a piece of equipment I'm overlooking? Yes. Large solar panels can be bought individually rather than cobbled together from smaller ones. These are designed to feed from the panel as-built rather than having to be modified. Example here. So what you need to do is find a low voltage garden light system (perhaps one powered by ...

0

Of course I also recommend you a cheap, off-the-shelf charge controller, but for completeness: there are alternatives. Charge controllers do not have to be of the PWM or MPPT type (basically the only ones commercially available), there are simpler designs – see Energypedia on Charge Controller Designs. If you wanted, you could certainly build one from your ...

1

It sounds like anything you put over the solar panels to protect them will reduce their power output. If that's important to you, I agree with Web Welborn about finding a way to deter the monkeys from being on the roof. Do the monkeys loiter on top of the solar panels or surrounding roof area? Here are some deterrents used for birds which you could attach ...

3

To answer the actual question, I think chicken wire will usefully help. The wire will have insignificant effect on solar production. However, the bracing to reasonably support chicken wire so it is effective deterring monkeys and decreasing the damage caused by rocks will probably cast a few shadows which will have an effect. The wire will have to be ...

9

I live in a small Himalayan Village facing the same problem. But we kept our solar panel in such a place which is not accessible to kids or monkeys. The second thing I would like to mention is that if our neighboring kids don’t have that much of vision of damage of the solar panel due to stone pelting to monkeys may broke our panel - we have to make them ...

5

OK - so you're not going to be able to stop the kids from throwing rocks at monkeys and you're not going to be able to protect the solar panels from rocks. The only solution I see is to keep the monkeys off the roof. If the monkeys will run away from water, you can get motion detecting spriklers (available at Amazon) and mount them by your solar panels. The ...

4

Could you post a simple sign that asks the well-meaning kids to not throw rocks at your roof? You would want to depict rock throwing hitting a solar panel or glass pane. I could not find a precise sign but something like these might work as inspiration:

0

You're trying to solve the wrong problem. If neighborhood kids are throwing stones at your house or solar panels, it means they don't respect or fear you. Fix that. They're just kids; you're an adult. That means you have power and authority over them in a variety of ways. Exercise it. There is ZERO reason to put up with this kind of childhood hooliganism.

1

In my experience, even the "worst of the worst" neighborhood kids can be repelled by: threatening to call their parents Actually calling their parents If their parents "don't care", they will if you send them a bill.

16

The real problem is the monkeys. The collateral damage due to flying rocks would best be dealt with by trapping and relocating the monkeys. Or, it might be helpful to use an electric (chicken wire) fence to keep the monkeys off the roof. Other deterrents might be motion activated sprinklers or ultrasonic alarms. Obviously, there is not a perfect solution, ...

5

I would think a security camera that records, along with a phone call to the police, would be cheaper and easier than trying to figure this out. Along with the threat of legal action and jail time may come restitution for any damage to your panels.

5

How big are the rocks and how far are they being thrown from? Panels are generally designed to be able to withstand small to medium sized hail... if kids are throwing rocks large enough to break panel glass at your house, I'd imagine your house would be taking a lot of damage as well. Stating the obvious, but anything obstructing the sun will reduce output ...

1

Wire the panels all in series to get the highest possible voltage to the controller. This will keep your current lower, requiring less wire, and allow the MPPT charger to work more efficiently. If you are charging a 24V battery bank, you need at LEAST 26V but it will operate much better with higher voltages. Just try not to exceed 100V. 6 panels is probably ...

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