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Grid-Tie 7.2kW Solar Power System with SMA Inverter

Grid-Tie 7.2kW Solar Power System with SMA Inverter
Grid-Tie 7.2kW Solar Power System with SMA Inverter
Item code Brand name Model number
KITONGRID7.8SMA AltE Grid-Tie 7.2kW System


Check out our video on how to use the Grid Tie Solar Calculator:

How much solar do you need for a 2000 square foot home?

7.2kW Grid Tie System
With SMA Inverter

This 7.2kW solar power system is great if you're looking to install a solar power system on your home, to reduce your electric bill - or even offset it completely! You'll have to start by knowing how much power you currently use on a monthly basis. You can find this on your monthly electric bill. That will tell you how many kilowatt-hours (kWh) you are using each month. Then you simply plug that average monthly number into our Grid Tie Calculator, and off you go! The video to the right will step you through this very simple process.

Take a look on map below and find where you live. We have calculated an average monthly usage of power that this system can produce for you, depending on the peak sun hours in your area.  Also be sure to check out our Solar Rebates page where you can look up your state - you can save as much as 50% or more, in combination with the Federal incentives, on your installed system!

Grid Tie 7.9kW Grid Tie Insolation Map

NOTE:  The image of the solar panels above is representational.  The correct panel will always be listed in the table below.

7.2kW Grid Tie Kit Includes:
Part Number Item Description Quantity
HEL360HSPE360B Heliene 360 Watt Mono All Black Solar Panel 20
PVCMC4-MF-100FT 100' MC4 Connector Cable 2
PVCMC4-MF-15FT 15' MC4 Connector Cable 2
GENMC4KEY Disconnect Key for MC4 Solar Panel Connector Cables 1
SMASB7.7-US41V2 SMA Sunny Boy 7.7kW Grid Tie Inverter 1
SMAJMSF420 SMA Rapid Shutdown Module 20
MIDMNSPD-300AC Solar Surge Protection Device 300VAC 1
SQUDU222RB Square D DU222RB 60A 240VAC Unfused Disconnect 1
SQUPK3GTA1 Square D Ground Kit PK3GTA1 1
BURBIBS43 Burndy Multiple Wire Terminal 1
TWOXR100168A IronRidge XR100 14' Rail, Clear 4
TWOXR100132A IronRidge XR100 11' Rail, Clear 8
TWOXR100-BOSSM1 Bonded Splice Kit for XR-100 Rails 8
TWOXR100CAP End Cap for XR-100 Rails - Pair 4
TWOUFOCLMPBK IronRidge XR Universal Clamp, Black 46
TWOUFOSTP40MMB1 IronRidge XR Stopper Sleeve, 40MM, Black 8
TWOGDLUG XR Grounding Lug w/Hardware 2
TWOFLASHVUEM1 IronRidge FlashVue Flashing 36
TWOTBOLT Tbolt Bonding Hardware 36
TWO29-4000-077 XR Wire Clips - Bag of 20 3
HLRWESHLBL17 NEC Label: Electric Shock Hazard 4
HLRPVACDIS17 NEC Label: PV System AC Disconnect Label 3
HLRACRATING NEC Label: Inverter AC Rating Label 1
HLRACDISCT NEC Label: Photovoltaic AC Disconnect Label 1
HLRPVPOWSRC NEC Label: Photovoltaic Power Source 5
HLR14TURNOFFPV NEC Label: Turn Off PV Before Working 3
HLRELECSHKDC17 NEC Label: Warning Elec Shock, DC Voltage 1
HLR14DUALPOWER NEC Label: Warning, Dual Power Source 2
HLRMPVSD NEC Label: Main PV System Disconnect 2
HLRPOWSRC17 NEC Label: Warning, Power Source Output 1
HLRDCDISCT NEC Label: Photovoltaic DC Disconnect 1
HLRMAXVOLT17 NEC Label: Maximum Voltage 1
HLRRAPID2017 NEC Label: Rapid Shutdown Switch 1

* To take a look at technical spec pages, installation manuals, warranty information, etc. click on each item in the chart to go to that Spec Page.

Components of this 7.2kW Grid Tie Solar Power System:

The main parts needed for a home solar power system are listed here. Since each installation is unique, some parts/materials will need to be purchased separately to satisfy the needs of your specific project and local regulations.

1. Photovoltaic Modules (aka solar panels, solar electric panels)
The PV modules are the individual building blocks for providing power from the sun. They are typically made from silicon cells, glass, tedlar, and aluminum. Solar Panels can vary in type, size, shape, and color. The common nominal voltages for panels are 20V and 24V, in order to accomodate the voltage windows of grid tie inverters.

2. Racking/Mounting System for Solar Panels
The mounting system for the solar panels includes the hardware to permanently affix the array to either a roof, a pole, or the ground. These systems are typically made of aluminum and are customized to the mounting surface and the model of module used.  It is important to consider distance from roof for flush-type roof mount installations. Restricting airflow under the modules results in higher module operating temperatures that reduce power output. With pole mounts wind loading must be considered and proper civil works must be done with the foundation for the pole as well as the possible addition of supplementary wind supports for the array frame.

3. Combiner Box
A combiner box is an electrical box where series strings of solar panels are then spliced in parallel. This is also the place where the PV series string fuses or circuit breakers are located. This allows the installer to bring the separate strings together and combine them into one positive and one negative conductor, change wire types and leave the area of the modules in conduit. They are usually outside and weather rated, so they can be right next to the array.

4. DC and AC Disconnects
The DC and AC disconnects are manual switch units that are capable of cutting off power to and from the inverter. Some inverters have disconnects integrated into the unit with switches, others can have them integrated into a power panel assembly, and some inverters leave you on your own to provide suitable disconnecting means. The disconnects are used by service personnel or authorized persons (fire/police/electric workers) to disable power from a renewable energy system (in this case PV) so that there are no live electrical parts associated with the inverter, and that no current is going to the grid that could harm utility employees in the event that they are working in your area. Homeowners or authorized personnel can use the disconnects to de-energize a system for maintenance or service.

5. Grid Tie Inverter (String Inverter)
The grid tie inverter is the device that takes the energy that the photovoltaic system produces in DC current form and turns it to AC current that is then sent (sold) to the electric grid. These inverters typically have a voltage input range from 100 to 500 volts DC and they convert it into 120 volts AC, 240 volts AC, or 208 volts AC. These inverters are especially sophisticated devices that must conform to special regulations in order to tie into the utility. When the power goes out in your area, it is important to know that the grid tie inverter will not allow power to be sold back to the grid. This is done to prevent electric utility workers from being injured or killed by working on power lines they thought were de-energized. When the power goes out, your power will go out as well. A grid tie inverter will not resume normal operations until the utility grid has established standard conditions for 5 straight minutes within strict parameters.

This item is a package made up of the following components. Please call to speak to a sales representative to learn about other options which may be available.

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