A. The essential equipment that are required to produce electricity from the sun are as follows:
One or more Solar Panels
Charger Controller or Inverter
Batteries (if storage is required)
A. The requirement of solar panels depends on the load and applications. As thumb rule
For Grid connect solar panels shall be around 20% more than the inverter AC rating
For Off Grid, the module rating shall be based on the battery size and duration within, you want battery to be
Refer our calculation sheet to check the sizing of the solar system
A. A charge controller regulates the charge on the batteries, providing full-power when
necessary and reducing the charge when the batteries require less. This is important for maintaining the health and
prolonging the life of the batteries.
A. There are two types of charge controller that are available:
1. PWM stands for “Pulse Width Modulation” and is basically a 3 stage charging cycle type controller. Most of the DC applications uses this technique for lower power ratings; typically upto 2KVA.
2. MPPT stands for “Maximum Power Point Tracking”. This is a new type of controller that not only provides multi-stage charging but delivers more power to the batteries by comparing the PV voltage with battery voltage and thus delivering the best current to charge the. This makes them more efficient as compared to the PWM charge controller.
A. This is the only component of a solar energy system that is not required. However, if it
is not used, you will not have 120 volts AC and will have to use battery power alone. This might be
acceptable in a small RV or cabin, but not in use for normal AC appliances.
A. This refers to the Battery bank voltage. The main consideration is that at higher
voltages the current is less so that you can use smaller current rated system like wires between your
solar panel array and your battery bank, inverter, charge controller.
Correct Cables & Wire Sizes FAQs
A. In order to obtain maximum energy transfer from your solar panels, the wires
running to your equipment need to be large enough to carry the current.
Also, if they are too small, it is possible they could overheat & even catch fire.
A. The wires between the Charge Controller and the Batteries can be the same size as
the wires from the Solar Panels. However, all the batteries and the inverter need to be connected with long cables.
The size of your battery bank and inverter will determine the minimum size and should be covered in detail in the
instructions that come in the user manual with your inverter.
FAQs of Buyers Buying Solar Products/ Projects
A. Solar Panels work on the phenomenon called the Photoelectric Effect to produce electricity.
Solar Panels are nothing but blocks of specially designed semiconducting material which produce a small amount of electricity
when light falls on them. This small amount of electricity is produced in a large number of solar panels (Solar Arrays) to produce
electricity for everyday consumption. How do Solar Panels produce electricity?
A. Solar PV System does not consist of any moving parts. It is not prone to any kind
of damage caused due to the friction between the moving parts or any other mechanical phenomenon
that causes damage to a generator or a motor. A Solar PV System can easily last from 20 to 25 years
and can even work for a longer period if maintained properly.
A. The capital cost of a Solar System is higher than a DG System; nevertheless, a DG System
incurs a high fuel cost and maintenance cost. On the other hand a Solar System doesn’t require fuel and even
its maintenance is very minimal and easy. Besides a Solar System is clean and environmental friendly cost effective
on long run compare to DG sets.
A. A Solar System requires very minimal maintenance and is easy to maintain. Regular
cleaning of the Solar panels should be ensured so that the system works at its full efficiency and occasional
checks should be done to ensure that there is no shading over the Solar panel. The other components of the system, except
the Solar panels, have to be kept in a shaded area. These steps help in prolonging life of Solar System.
A. The Solar Panel in the system help produce electricity while other components needed
to convert and manage the power to the load. The electricity produced by the panel is in D.C. form and have to be converted
into A.C. form to be able to be used by the consumer. A proper and safe flow of the electricity needs to be ensured so that no
damage is done to the appliances. It is to ensure better reliability of the system, the other components are required.
A. A Solar System doesn’t require direct sunlight to work, though direct sunlight gives
the maximum efficiency. The system continues to work even during the overcast conditions but the efficiencies get reduced.
The efficiency generally reduces to 70% during an overcast day. In India where more than 300 sunny days are available in most
of the places, overcast conditions are not a major concern in India.
A. The cost of a Solar Setup depends on factors such as the connected load, type and
quality of the components used in the system, total available roof area etc. As per a rough estimate, grid connected solar
PV System with Grade A manufacturer’s components costs around Rs. 65,000 per KW while a battery connected system costs around
Rs. 1.00 Lacs per KW.
A. In a Solar System, the major investment is its installation. It has a minimal maintenance
cost and no fuel cost. A 5 KW Solar PV System has average pay back period of approximately 4 to 5 years. The life span of a solar
System is as high as 20 to 25 years as a result 70 to 75% power produced by it may be considered as the free electricity.
A. It is mandatory for a Solar System to have a shade free area all the time of the day.
The most important factor on which the area of a Solar System depends is the Panel Efficiency. Generally, a Solar Panel with 15%
efficiency requires 100 Sq. Ft. of shade free roof area. Another factor is the weight of the Solar Panels that may put pressure on
the roof of the building. For old and poorly built construction the Panels have to be scattered in a larger area for it to withstand
the weights.
A. Counterintuitive to the belief among the people, an increase in the ambient temperature around
the Solar PV System results in decrease in efficiency of the system. It is to be noted here that though PV Systems work on the energy
from the sun, they work on sun’s light energy and not on its heat energy. But the increase in temperature may result in lesser output
voltage produced by the system which in turn results in the decreased efficiency of the system.
A. Shading has a very large impact on the performance of a Solar PV System. Since a Solar
Panel is made of large number of Solar Cells, shading on a small part of it can have a adverse effect as the energy produced
by the rest of the Solar Panel may be consumed by the part which is under the shade.
A. Setting up a Solar PV System at your premises gives you a chance to be self-sustainable in your
power consumption as dependency on the grid to supply you the required electricity gets reduced. A Solar System is a clean and
environment friendly way for Power Generation. You can sell electricity to the already power deficit grid in the country thereby
playing a role to fulfil the electricity requirement of the country.
A. Most of the solar panels are installed on rooftop. However, in some cases they can also be
mounted on ground. You would need a shadow-free area of approx. 10sqmtrs or 100 Sq. ft. to accommodate 1kWp solar panels. Please
make sure that the area gets maximum sun light. Your solar installer will select the best angle for solar panels.
FAQs about Solar Panels
Solar panels are designed to absorb the sun rays and generate electricity.
They are also known as PV or photovoltaic modules as they don’t need anything beyond sunlight to produce electricity as DC.
Solar panels, thus, can easily replace fossil fuels that cause unnecessary pollution.
These panels supply clean and renewable energy that comes directly from sun, reduce the carbon footprint, and is not harmful to the environment.
The cost of solar panels has considerably reduced in the past few years. The reason is simple.
More and more people understand the benefits that it has in store. At Livfast, we value quality and provide the best solar panels
at a very affordable price.
Also, an investment in solar panels is very sound as compared to the grid system, it is cheaper and the whole
cost can be recovered in a short time. In fact, after a certain period of time, if you choose the right installation service, you can
actually start earning profit on this investment.
A. Livfast gives 25 years of warranty on panels and assures a great performance, not just
functionality.
Electricity bills are no longer a worry: The solar panels generate electricity to charge the
battery of your inverter and run the load. You don’t always require the grid and this reduces your electricity bills visibly.
It is a one-time investment: You get solar panels installed today and enjoy electricity for at least 20-25 years. Yes, you heard it
right. After all, the sun never invoices you
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