Solar panel hook up to grid

  • On-Grid vs Off-Grid Solar
  • Hook up solar panels to the grid – Energy informative
  • Solar Energy Installation Guide for Small Home Grids
  • How does solar power feed back into the grid?
  • How A Grid-Connect Solar Power System Works
  • How to Connect Solar Panels to the Grid

Day by day the price of the solar panel falls gradually. But still installation of a complete off grid solar system is costly. So I write this instructable to get all the components of your solar system separately and assemble it all by yourself. You can find all of my projects on:


JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. This is only an installation overview and is not meant to be a comprehensive guide. All systems are different, and therefore no single set of instructions can be used to cover all options and configurations. Do not attempt to install your own solar system if you are not comfortable working with electricity and tools. Northern Arizona Wind and Sun is not responsible for anything that happens during the installation process.

Before you start installing your new off-grid solar system, let’s first discuss safety. An off-grid solar electric system involves working with both alternating current AC and direct current DC voltages. These voltages can be lethal if all safety precautions are not followed. If you are ever uncomfortable with any aspect of your installation, please consider hiring a qualified electrician or get help from a knowledgeable friend.

If working with electricity doesn’t bother you, then just remember to handle all wires as if they are live. The safety element cannot be stressed enough. If you don’t know how to work with electricity, you could potentially be putting your life in danger. If you need help or advice on how to install your system, we highly recommend taking advantage of our free online solar discussion forum.

You will find lots of valuable information and be able to ask questions to very knowledgeable individuals. You can find the link to the discussion forums on our main home page or you can follow this link. Off Grid Installation Overview. Let’s first go over some of the basic tools and materials that you may need for an installation. Some tools are specific to certain material types.

Most off-grid solar systems will have their panels mounted on a roof or on a pole. Both configurations have their advantages and disadvantages but work equally well when installed properly. Regardless of which method you choose, your solar panels mus t be mounted securely. Follow the assembly instructions for whichever type of mount you have selected. From an electrical standpoint, there’s really not much difference between a roof-mounted system and a pole-mounted system.

But if you use a pole mount, you will need to get the power from the solar panels to your house. This is normally accomplished by digging a trench between the pole location and the part of your house where you want the electrical wires to enter the building. Many cities and counties have their own electrical regulations in addition to the National Electrical Code. A lot of those jurisdictions actually require a inch depth and some require up to 36 inches.

So if you plan to get your system inspected, you should contact your local Authority Having Jurisdiction AHJ and inquire about the minimum depth requirement in your area. Be sure to look up the PVC schedule rating requirements too. If you are using a pole mount , you will also need to install an eight-foot copper ground rod at the pole location. If you live in a very dry or desert-like environment or have very sandy and rocky soil, you may need to install two or three ground rods and connect them together for a better Earth connection.

Ground rods must be driven vertically into the ground whenever possible. If rocks or other obstructions are preventing the rod from penetrating the ground vertically, the NEC does allow for the ground rod to be driven in at a degree angle or even laying flat in a trench. A vertically-driven ground rod is always best whenever possible. A sledgehammer is often required for driving the rods into the ground.

If you own a jackhammer, you can find a bit attachment for driving ground rods that makes the job much easier. The ground rod s at the pole mount needs to be connected to both the combiner box ground bar more on that later and to the copper ground rod for your house. The house ground rod and the pole’s ground rods must be connected so that you do not have two isolated grounding systems connected to the same electrical system.

There are lots of technical and scientific reasons as to why the ground rods need to be connected together, but that’s not the focus of this article. Just take our word for it and you’ll save yourself a lot of frustration. The easiest way to do this is to lay a bare copper ground wire in the same trench as your conduit. Do not run the bare wire inside of the conduit. You will get a better Earth ground connection if you run the bare copper wire directly in the trench, next to your conduit.

The pole mount array will normally consist of the mounting hardware, solar modules, wiring, and a combiner box with circuit breakers or fuses. A basic combiner box has more than one function. It combines the output power of multiple solar panel strings and it’s also a transition point where the smaller gauge wire from the solar panels can be increased in size, if necessary.

The distance from the pole mount to your solar charge controller, along with the array amperage, will determine what size wire you will need. If you purchased your system from us, we probably already informed you of which size wire to use. If you purchase your equipment from us, our system designers will be happy to calculate the wire size that you need.

Otherwise, you can always use the wire ampacity chart NEC Table Some websites offer free wire sizing calculators too. In previous versions of the NEC, this same table can be found at A roof-mounted system will also use a combiner box. It serves the same function as it does on a pole-mounted system. However, it can sometimes be a little more tricky or difficult to run wires from the roof’s combiner box to the charge controller, especially if it’s being installed on an existing house.

The best time to run electrical conduit and wires is when the house is being built. This is one reason why a pole mount system can sometimes be easier to install for existing homes; the electricity can usually be piped into the house directly into the equipment room. Installing a roof-mounted system in an existing home is certainly possible if you have the proper tools. The leads usually come with some type of male and female interlocking connectors. The modules that we sell come with either the MC4 connectors or the H4 connectors, but there are also other types of connectors on the market.

They all pretty much work in the same way. If you need help with solar panel connectors, we have an article that explains MC4 connectors and how to use them. If you need more information about Multi-Contact MC4 interlocking connectors and how to use them, please take a look at our article about MC4 connectors and extension cables. The H4 type connectors function the same as the MC4.

Modern charge controllers allow for a wide range of voltage inputs, which will directly affect how your solar modules must be connected and wired. Always pay attention to the voltage ratings of your equipment so that you do not inadvertently use too much or too little voltage. The proper solar panel voltage should be determined during the design phase, based on the equipment you will be using.

As an example, let’s say we are using a MidNite Solar Classic charge controller with Watt solar modules. These types of controllers can convert voltage into amperage. This is much more efficient than a standard PWM type of controller. With a PWM controller, any voltage above the usable voltage for your batteries ends up not getting used. If you would like to read more about the different types of solar charge controllers, see Solar Charge Controller Basics. The Classic can handle up to volts DC input from the panels and has a maximum output of 96 amps DC to the batteries.

The open circuit voltage Voc rating of the watt module is The Classic can safely handle up to three of those modules connected in series. When you connect solar modules in series negative to positive from one module to the next , the voltage is added together but the current remains the same. When you connect modules or strings of modules in parallel positive to positive and negative to negative, from one module or string of modules to the next , the current is added together and the voltage remains the same.

That would be That equals a total of That is within the operational range of the charge controller. If you tried to use four modules in a series, that would equal Because that voltage is higher than the allowable input voltage, the charge controller will turn itself off until the voltage drops down to volts DC or below.

However, some brands of charge controllers do not have a shut-off feature. If you go over the allowable input voltage, it could potentially burn up your controller or even cause a fire. Never exceed the voltage and current ratings of your equipment; it’s not only dangerous, but it will almost certainly void the manufacturer’s warranty. Once the three modules are connected in series, you will need an MC4 or H4 extension cable, depending on which types of connectors you have on your modules.

If your modules only have a junction box, you won’t need extension cables. Follow the instructions in the MC4 article for using the extension cables. The extension cables will terminate in your combiner box. The positive leads will usually connect to circuit breakers or fuses and the negative leads are usually terminated to the negative bus bar.

This is a good time to go over the basics of the combiner box and how to make the proper connections. A combiner box is needed for combining multiple modules, or strings of modules, into a single circuit. It also incorporates overcurrent protection for each module or string. A basic combiner box is going to consist of a PV negative bus bar, a ground bus bar, a PV positive bus bar, circuit breakers or fuses, and lightning or surge protection optional.

It’s using three circuit breakers for the three PV source circuits. The ground bus bar must be connected to Earth ground. If this is at a pole mount location, you will use a ground bar as the Earth ground connection. If this is for a rooftop installation, the Earth ground can be connected using a ground bar at the house or connected to the ground bus bar in a properly installed electrical load panel.

Learn More About Grid-tie Power Systems. Grid-intertied power systems are for folks who are (or will be) connected to utility company power lines (the “Grid”). They are also called gridtie, grid-tie, gridtied, grid-tied, grid intertied, grid-intertied systems..!. Hook up solar panels to the grid, But the cost of an off-grid solar, How to connect solar panels to my house’s electricity Our solar experts will help guide your DIY.

Connecting your solar panel system to the grid has a ton of benefits including selling power back to your utility provider and having the security that your home will always have access to electricity. The process can be difficult if you are planning a do it yourself solar installation project, so it is best to leave an installation project to professionals. The pay off having continuous power and the financial reward from selling your power back to the utility provider is well worth connecting to the grid. First, you need the proper equipment to convert the electricity produced by a solar panel to one that can be used throughout your home and on the grid.

A grid-connected solar power system is the most cost effective and simple type of solar power system. The main components of a grid connect system are solar panels and an inverter.

Looking to switch your business energy supplier? Click here. While it is possible to have a solar PV system that is not connected to the National Grid, choosing not to connect means missing out on potentially lucrative incentive schemes like the government’s Feed-In Tariff FIT.


While the technology behind solar energy seems complex, when broken down, how solar power works is easy to understand. Whenever the sun shines and even in overcast weather , the solar cells generate electricity. Some electricity companies meter the electricity fed into the grid by your system and provide a credit on your bill. How much you are paid is determined by the feed-in tariff. When the solar cells are not producing power, for example at night, power comes from the mains power grid as usual.

Hook up solar panels to the grid – Energy informative

On-Grid Systems are solar pv systems that only generate power when the utility power grid is available. They must connect to the grid to function. They can send excess power generated back to the grid when you are overproducing so you credit it for later use. These are are simplest systems and the most cost effective to install. These systems will pay for themselves by offsetting utility bills in yrs. These do not provide power during a grid outage. They are simple enough that you can install it yourself in a weekend with a friend. They are cost effective enough to pay for themselves and put money in your pocket long term. If you want to reduce your electric bill and your carbon footprint this is a good choice. These systems allow you to store your solar power in batteries for use when the power grid goes down or if you are not on the grid.

Energy storage is also moving closer to mass-market adoption, and more installers are offering solar batteries and solar panel battery banks a.

Hook up solar panels to the grid – Energy informative Guide to mains grid connect solar power Proinso solar energy supplies Guide to mains grid connect solar power If you could add about in the guest where would it help? I hook up solar panels to the grid not eschewed maximum dating, which struck me as regardless zip sink and many. Well if anyone can just buy those individual devices and hook them up and do.

Solar Energy Installation Guide for Small Home Grids

So for example if your electrical loads in your house were consuming 20 amps of power and your solar power was only generating 12 amps then you would be drawing 8 amps from the grid. Obviously at night all of your electrical needs are supplied by the grid because with a grid connect system you do not store the power you generate during the day. A stand alone solar system the solar panels are not connected to a grid but instead are used to charge a bank of batteries. These batteries store the power produced by the solar panels and then your electrical loads draw their electricity from these batteries. Stand alone solar power systems have been used for a long time in areas where no public grid is available. However, the real growth in solar power systems in the last 5 years has been in grid connect systems. Why is this? Because most people live in areas that are connected to a public grid and stand-alone systems are much, much more expensive than grid connect systems because batteries are very expensive. It is my hope that in the future we will see a fall in battery prices and that stand alone systems will be used more. However, batteries will need to become a lot cheaper for this to happen. With a stand alone solar system the solar panels are not connected to a grid but instead are used to charge a bank of batteries.

How does solar power feed back into the grid?

Note from Michael: Often when we think of a solar power system, we envision a hugely complicated setup and lots and lots of batteries. Grid connect solar system Image courtesy Energy Matters Australia — grid connect solar specialists. The inverter will shut down to avoid damage to appliances in your home and to prevent electricity back feeding into a grid. In the northern hemisphere, the roof where the panels will go need to be facing south. You can start out with a small unit and then build on that. Depending on the country, there will be a minimum configuration needed in order to get a decent renewable energy rebate.

How A Grid-Connect Solar Power System Works

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. This is only an installation overview and is not meant to be a comprehensive guide. All systems are different, and therefore no single set of instructions can be used to cover all options and configurations. Do not attempt to install your own solar system if you are not comfortable working with electricity and tools. Northern Arizona Wind and Sun is not responsible for anything that happens during the installation process. Before you start installing your new off-grid solar system, let’s first discuss safety.

How to Connect Solar Panels to the Grid

Having trouble figuring out which solar power products will be good for you in your small house? Having trouble just understanding solar energy in general? Making the decision to convert to solar power and change your whole electricity system is a big move—but one that will benefit you completely. For smaller homes that are looking to go solar, there are ways to install your materials to bring the most benefit to you and your everyday life. These tips will be full of products that you need, easy ways to find help to install them, and overall tips and tricks to make your conversion to solar energy a good, efficient one. One of the main aspects of this guide is finding out size solar panel you need to create the right amount of renewable energy.

Get A Quote. What are the benefits of grid-connected solar panels vs. Deciding whether or not to grid-tie your solar panels is usually pretty straightforward — the clear-cut benefits of being grid-tied appeals to the majority of homeowners. There are, however, some people that choose to live off the grid. What would be the best in your situation?

Ему оставалось только стоять на коленях на холодном каменном полу огромного собора. Старик утратил к нему всякий интерес, прихожане встали и запели гимн. Ноги у него свело судорогой. Хорошо бы их вытянуть. Терпи, – сказал он.  – Терпи. Потом закрыл глаза и глубоко вздохнул.

How to Solar Power Your Home / House #1 – On Grid vs Off Grid