Photovoltaic power systems convert daylight right into electricity. A residential PV power system enables a householder to generate some or all their daily electric energy demand on their lonesome roof, exchanging daytime excess power for future energy needs ( i.e. Night use ). The house remains attached to the electrical application at every point, so any power needed above what the solar system can produce is just drawn from the utility. PV systems can also include battery backup or uninterruptible power supply ( UPS ) capability to operate selected circuits in the home for hours or days during an application outage.

In this early stage of marketing solar electrical power systems to the home market, it is a good idea for an installer to work with well established firms that have complete, pre-engineered packaged solutions that accommodate variations in models, rather than custom planning custom systems. Once a system design has been chosen, attention to installation detail is critically critical. Fresh studies have discovered that 10-20% of new PV installations have significant installation issues that will end up in seriously reduced performance. In a number of these cases, the performance deficits could have been eliminated with proper attention to the main points of the installation.

Basic Principles to Follow When Planning a Quality PV System

one. Choose a packed system that matches the owner’s wants. Purchaser criteria for a system may include reduction in monthly electricity bill, environmental advantages, desire for backup power, 1st budget constraints, for example. Size and orient the PV array to supply the predicted electrical power and energy.

2. Make sure the roof area or other installation site is capable of handling the required system size.

three. Explain daylight and weather resistant materials for all outside apparatus.

four. Locate the array to reduce shading from foliage, vent pipes, and adjacent structures.

five. Design the system in accordance with all appropriate building and electric codes.

six. Design the system with a minimum of electrical losses due to wiring, fuses, switches, and inverters.

seven. Properly house and manage the battery system, should batteries be needed.

8. Ensure the design meets local utility interconnection needs.

Steps to Follow When Installing a PV System

1. Ensure the roof area or other installation site is capable of handling the required system size.

two. If roof mounted, confirm that the roof is literally capable of handling additional weight of PV system. Augment roof structure as necessary .

3. Properly seal any roof penetrations with roofing industry approved sealing methods.

four. Install kit according to manufacturer directions, using installation requirements and procedures from the manufacturers ‘ directions.

five. Correctly ground the system parts to reduce the specter of shock hazards and prompted surges.

6. Check for proper PV system operation by following the checkout procedures on the PV System Installation List.

seven. Ensure the design meets area utility interconnection requirements.

eight. Have final inspections finished by the Authority Having Jurisdiction ( AHJ ) and the use ( if required ).

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