Microinverters convert direct current energy (DC) from solar panels to usable alternating current electricity (AC) for facilities, homes, etc. Because microinverters allow easy addition of more solar panels to the system in the future and have a longer warranty, they are often preferred to other solar inverters.
Connecting solar panels to microinverters is essential as solar energy is best used indirectly from the solar power inverter. Correct wiring ensures the optimal operation of solar products and prevents damage to your wiring system.
This post highlights the requirements for wiring solar panels with micro inverters and the steps for proper wiring.
Wiring solar panels with micro-inverters is an easy task. This task is more manageable when all necessary components are set and properly grounded. For a successful operation, the following equipment must be bonded electrically and grounded.
Some regions may have other electrical bonding requirements that can be researched and applied. In addition, It is essential to bond this equipment using a code-approved method to ensure a safe and reliable operation.
Microinverters are usually connected to individual solar panels and linked together, however, that is not always the case. Some microinverters take two panels, and some can take four. When placing panels on a rooftop, the number of panels on each section will influence how many microinverters to use, the electrical connections required, and how many rails and brackets are needed.
While rooftop placements are often convenient and least intrusive, ground placements allow for a solar array that is as big as your budget allows. Ground-based arrangements offer more flexibility in panel positioning and microinverters connection.
All wiring operations should be done by professionals or skilled technicians with ample experience in construction and electrical work.
These safety tips should be followed to avoid clipping, errors, or destruction of equipment.
Below are the steps taken to wire a solar panel with microinverters.
From a junction box out of the PV panel array and using an interconnect cable, connect the first microinverter to the wiring that goes to the facility. The junction box wiring connections include the following:
The disconnection switch is used to disconnect the PV panel array and ensure it does not power the grid. It is best placed within 10ft of the meter but can be placed at further distances in certain conditions. This switch is a standard item that can be purchased from many electrical supply stores. It should be placed in a safe location and should have a means of locking in its off position.
The disconnection switch wiring connections are as follows:
When using a meter without a power distribution panel, a new PV feed-in breaker in the circuit breaker box is required. Because the wiring is live, it is important to be safe when handling the installation. Ensure the circuit breaker and disconnect switch are off while installing.
The PV feed-in breaker wiring connections are as follows:
This final step includes connecting the PV panels to the microinverters and starting the system. This is done when the sun is down. During the day, cover the PV panels before connecting them to their inverter.
Finally, after checking all the wiring, plug in the EMU unit put on the feed circuit breaker, and turn on the disconnect switch. If there is sun on the panels, the reading will appear on the EMU display. The EMU also shows the number of inverters online.
Merging new panels with old ones, such as IQ microinverters and non-IQ microinverters, requires compatibility and communication of production, receiving updates, etc., between the microinverters.
With the help of a Module Compatibility Calculator, compatibility of the microinverters can be confirmed prior to purchase. And using an IQ envoy, new and old panels can be merged successfully as this equipment allows communication between the micro inverters.
Wiring solar panels with micro inverters can be done quickly as it mainly involves simple push-in connections. To enjoy lasting use of microinverters and solar panels, these connections must be made safely and reliably using products from trusted companies.
For a wide range of quality solar panels and microinverters, and other solar PV protection products, contact Beny-the leading brand for quality DC protection products and EV charging stations.