The whole setup is an inside and outside job. Either on self installation or using the panel installers for installation, the equipment and the installation process is just the same. Solar installers are recommended over self, since damage to the delicate objects can be costly. Solar panel installation can take one t0 three days of time. A team of 4 or 5 installers, with the project manager should do the trick.
1. Solar panels
Sizes and weight of the solar panel vary with manufacturer. Solar panels are generally 1.7 m long, 1 m wide. (approx 3*5 feet2). A 3kW solar panel would require 24 m2 area and a 5kW would require 40 m2 area of roof. The solar panels can weigh anywhere from 15-25 kg depending on the manufacturer.
2. Roof Anchors
These are the first equipment used for the installation. These are stainless steel hooks that make up for a sturdy base for installation of solar panels. On completion of the setup, the hooks remain hidden from view.
3. Rail mount
These are aluminium frames or rails which are fixed to the roof anchors by the help of nuts and bolts. The solar panels placed over it are held together by the use of clamps.
The clamps present at four corners of the solar panel grip it to the rails.
The process starts with scaffolding. Scaffolding is setup to ensure the safety of the workers. It is placed a couple of days before the installation, and is removed after a couple of days after the installation.
2. Mounting System
The quality of the mounting system is necessary for the setup to last long. Since the clamps, rail mounts, roof anchors are going to be subjected to various different climatic conditions such as wind, rain, etc., quality is important for it to last as long as manufacturer’s warranty period.
i. Placement of roof anchors and frame
Roof anchors are attached to the rafters on the roof. Now rail mounts are attached to the anchor. NOTE: The rails need to be parallel for the pv panels to be aligned properly.
ii. Placing the solar panels
The solar panels are fitted in place using the clamps in the four corners.
iii. Wiring between the panels.
The panels are wired in series and parallel combination.
iv. Wiring the panel with the inverter
The panels are wired to the inverter keeping the wiring hidden from people’s view.
v. Inside home
The inverter is connected through wiring to the sources of supply of electricity in the home.
vi. Testing of the setup
The project manager would switch on the inverter, hence powering the setup. The voltage reading is sent to the head office. Once the performance standard has been confirmed, necessary certificates are issued and paperwork are completed.