How to Connect an Inverter to a Distribution Board

You can connect an inverter to a distribution board safely at home in 6 steps. Always turn off the main power supply before starting and use an isolator switch between the inverter and distribution board for safe operation.

• Step 1: Switch off the main power supply completely
• Step 2: Position the inverter close to the distribution board
• Step 3: Connect the battery to the inverter using minimum 4mm² copper cables
• Step 4: Wire the inverter's output to the distribution board's input terminals using minimum 6mm² copper cables
• Step 5: Install an isolator switch between the inverter and the distribution board
• Step 6: Switch on the inverter and test all connected circuits

If you are not confident with electrical wiring, always hire a licensed electrician. Improper connections can damage appliances or create 

fire hazards.

You can convert the cost into Easy EMIs using Bajaj Finance's financing options at over 1.5 lakh partner stores such as Reliance Digital, Croma, Vijay Sales, and more — or check your eligibility in 2 minutes.

Having every tool ready before you begin prevents interruptions mid-installation and keeps the work safe. Here is a complete list of what you need for this job, with a note on what each item does.

Do not substitute undersized cables. Using thin cables for high-current connections causes overheating and is a fire risk.

Follow these 6 steps carefully. Do not skip any step, especially the safety steps at the beginning and end.

Step 1 — Turn off the main power supply

Go to your main circuit breaker or main switch and turn it off completely. Confirm the supply is off using your multimeter before touching any wires. This is the single most important safety step in the entire process. Never begin wiring with live power on the circuit.

Step 2 — Choose the right location for the inverter 

Place the inverter within 1 to 2 metres of the distribution board to keep cable runs short and reduce voltage drop. The location must be dry, cool and well-ventilated with at least 30 cm of clearance on all sides for airflow. Avoid placing the inverter in direct sunlight or in a closed cabinet where heat can accumulate. If you are installing a hybrid solar inverter, ensure the solar panel cable can reach the inverter from your rooftop without excessive length.

Step 3 — Connect the battery to the inverter 

Identify the positive (+) and negative (−) terminals on both the battery and the inverter. Connect the red cable from the battery's positive terminal to the inverter's positive input terminal. Connect the black cable from the battery's negative terminal to the inverter's negative input. Use minimum 4mm² copper cables and tighten all connections firmly with a spanner. Loose battery connections cause sparking and can permanently damage the inverter.

Step 4 — Link the inverter output to the distribution board 

Run minimum 6mm² copper cables from the inverter's AC output terminals to the input side of the distribution board. Connect the live wire (red or brown), neutral wire (black or blue) and earth wire (green or yellow-green) to their corresponding terminals in the distribution board. Label the inverter circuit clearly so it is identifiable during future maintenance. If using a hybrid inverter, follow the manufacturer's wiring diagram for the mains input, battery and output connections.

Step 5 — Install an isolator switch 

Fit an isolator switch between the inverter output and the distribution board. The isolator allows you to disconnect the inverter from the board for maintenance or during a fault without switching off the entire household power. Use a double-pole isolator rated for at least the inverter's maximum output current. Secure it in an accessible location near the distribution board and label it clearly.

Step 6 — Test the system 

With all connections made and the isolator switch open, switch on the main power supply. Turn on the inverter and close the isolator switch. Use your multimeter to verify voltage at the distribution board's output terminals. Switch off the main supply to simulate a power cut and confirm the inverter takes over immediately. Test all circuits connected to the inverter — lights, fans and any other loads — to confirm they operate normally on backup power.

Electrical work carries real risks. These precautions protect you and your home during and after the installation process.

• Always switch off the main power first: This is non-negotiable. Working on live circuits causes electric shocks that can be fatal. Verify with a multimeter that the supply is off before touching any terminal.
• Use insulated tools throughout: Insulated screwdrivers and pliers are rated to protect against shock at standard household voltages. Never use uninsulated tools on any part of the installation.
• Check inverter and board compatibility: Confirm the inverter's output voltage (220 to 230V AC) and frequency (50Hz) match your distribution board's requirements. Verify the inverter's maximum output current does not exceed the board's rated capacity.
• Do not overload the inverter: Add up the total wattage of all appliances connected to the inverter circuit. The total must not exceed 80 percent of the inverter's rated output to allow a safety margin during surge loads.
• Keep ventilation clear at all times: An inverter generates heat during charging and discharging. Blocked ventilation causes overheating, which shortens the inverter's lifespan and can cause internal component failure. Check the 30 cm clearance around the unit regularly.
• Test every connection with a multimeter: After wiring but before switching on, use the multimeter to verify continuity and correct polarity at every connection point. A reversed polarity connection can permanently damage the inverter in seconds.
• Follow the manufacturer's wiring diagram: Every inverter model has specific wiring requirements. Refer to the user manual for your specific model — especially important for hybrid solar inverters with multiple input sources.
• Hire a licensed electrician if unsure: If at any point you are not confident about a connection, stop and call a qualified electrician. The cost of professional installation is far lower than the cost of repairing damage caused by incorrect wiring.

Also explore: Sine wave inverters

Choosing the right inverter capacity is as important as connecting it correctly. Undersized inverters overload during outages and undersized batteries run out too quickly. Here is a verified price list of popular home inverter models across different capacities to help you decide.

Disclaimer: Each model's features, availability, and pricing are subject to change and may vary. For the most accurate and up-to-date information, please visit the official website.

Note: Although you can only use Bajaj Finance’s financing options to split any purchase above Rs. 5,000 into Easy EMIs, you can always club your product with other electronics and home appliances to meet the minimum amount and enjoy the same benefits.

Before you decide, explore the latest offers. You may find a great deal on a model that matches your needs.

Trade-off note: A square wave inverter is cheaper upfront but is not suitable for sensitive electronics like computers, LED televisions and inverter fans. A pure sine wave inverter costs more but is safe for all appliances. For homes with modern electronics, always choose pure sine wave.

EMI breakdown table

If you are considering buying the Luminous Zelio Plus 1700 (1500VA) at Rs. 7,500 using Bajaj Finance's financing options, here is an example of what your monthly EMI would look like across available repayment plans:

Disclaimer: EMI amounts shown are illustrative examples based on assumed pricing, tenure, and financing terms. Actual EMI payable may vary depending on the product price, down payment, repayment tenure, applicable interest rates, processing fees, and the terms of the Bajaj Finance Insta EMI Card or Bajaj Finance Easy EMI Loan.

A 6-month plan on the Luminous Zelio Plus 1700 keeps the total cost equal to the purchase price while reducing the upfront financial burden to Rs. 1,250 per month.

Bajaj Finance offers two ways to convert your inverter purchase into affordable monthly payments. Both options are available at over 1.5 lakh partner stores across 4,000 cities in India, including Croma, Reliance Digital and Vijay Sales.

How to choose? Both options require you to be physically present at a partner store. The Insta EMI Card is ideal for buyers who plan to purchase an inverter today and a battery, accessories or another appliance at a later date across the same card. The Easy EMI Loan suits buyers financing a single higher-value inverter purchase — for example, a hybrid solar inverter above Rs. 15,000 — in one transaction.

Example of what an inverter purchase on EMI looks

Suresh, a 42-year-old homeowner in Lucknow, experiences 4 to 5 hours of power cuts daily during summer. After reading this guide, he decides to connect a new inverter to his distribution board himself. He chooses the Luminous Zelio Plus 1700 (1500VA pure sine wave) at Rs. 7,500 to safely power his two ceiling fans, four LED lights, television and Wi-Fi router during outages. Since he has purchased from Bajaj Finance partner stores before, he uses his Bajaj Finance Insta EMI Card at Croma, Lucknow, opting for a 12-month repayment plan. His monthly EMI works out to approximately Rs. 625. He needs a minimum CIBIL score of 650 to be eligible.

Getting your inverter on Easy EMIs is quick and straightforward. The process takes just 10 to 15 minutes at a partner store.

1. Browse inverter models on Bajaj Mall: Explore the full range of inverters on Bajaj Mall. Compare capacities, waveform types and prices before visiting a store.
2. Find a partner store near you: Use the Bajaj Finance store locator to find a nearby outlet such as Croma, Reliance Digital, Vijay Sales or other authorised retailers.
3. Check the inverter in person: Visit the store and confirm the inverter's VA capacity suits your home load. Check whether it is a pure sine wave or square wave model and verify it comes with installation support or a warranty card.
4. Choose a suitable EMI option: At checkout, ask the store executive about the Bajaj Finance Insta EMI Card or Easy EMI Loan. Confirm tenure options and whether your chosen model qualifies for a zero down payment offer.
5. Complete payment and arrange delivery: Once approved, your purchase is processed immediately. Schedule home delivery and professional installation at your convenience.

You can also check your loan eligibility online in advance by entering your mobile number and OTP, helping you plan your purchase before visiting the store.

Bajaj Finance’s Smart Savings Calculator helps you unlock maximum savings every time you shop at partner stores. It brings together all available brand, dealer, and scheme offers—so you can see your total savings instantly and shop smarter with Easy EMIs.

1. Dealer offers - Grab exclusive in-store deals at over 1.5 lakh partner stores across India. Enjoy local discounts and special prices you will not find online.

2. Brand offers - Access limited-time discounts from top brands across electronics, appliances, and more. Discover brand-specific savings selected just for you.

3. Bajaj offers - Unlock exclusive Bajaj Finance deals on popular products—available only to our customers. More rewards, more value.

4. Scheme offers - Take advantage of time-sensitive offers on select EMI schemes. Get extra benefits after paying just 3 EMIs—visible during EMI selection at checkout.

Calculate your extra savings today!