420 Watt Off Grid Solar Power Package (Photovoltaic) for the Energy Efficient Home.
These adaptable systems should be used for off-grid applications. Kit includes PV Modules with MC Cables and Inverter.
420 watt A/C Off-Grid micro Battery based power System
System output of 67.5 KWH monthly (with average 6 hrs a day sun)1- 3 pcs 140 watt Solar Cynergy solar panel
2- 1 pcs Xantrex C35 35A, 12/24V PWM Charge Controller
3- 1 pcs Samlex 600W 12V PST-60S-12A Sine Wave Inverter
4- 4 pcs MC4 Y-connectors (male and female types)
5- 1 pcs 30' MC4 10 AWG cable (Male,Female Ends)
6- 2 pcs 6' MC4 10 Awg Cables (Male,Female Ends)
7- 3 pcs Z-Bracket 4-Pc set (Under frame mounts)
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. PV modules can vary in type, size, shape, and color. The common nominal voltages for modules are 12V and 24V, but newer modules that are intended for grid tie systems, often now have much higher voltages to accommodate the voltage windows of grid tie inverters. Costs for PV modules are currently ranging between $4.40 and $5.40 USD per rated watt.
2. Charge Controller
A charge controller is a device that regulates the amount of current the PV modules feed into a battery bank. Their main function is to prevent over-charging of the batteries, but charge controllers also block reverse current from a battery bank from leaking backwards into the photovoltaic array. There are a few varieties of charge controllers, but the two main types are PWM (pulse width modulated) and MPPT (maximum power point tracking). PWM technology is older and more common on smaller solar arrays. With PWM, the controller is sized based on nominal PV voltage (which must match battery bank nominal voltage) and the total solar array output current. PWM controllers typically have two to three stages for battery charging and maintenance. MPPT controllers can typically take much higher voltages (but not lower) than the battery bank that they are charging. They “track” the performance of the solar array and can find the maximum power point from a module even when converting excess voltage to usable current. MPPT charge controllers can allow for a 10% to 25% increase in power sent to the batteries over a standard PWM controller. Charge controllers typically cost between $50 and $500 USD depending on size and type.
An inverter takes current from batteries (DC) and turns it to alternating current (AC) to run any common loads. Some inverters have integrated AC chargers so that they can use AC power from the grid to charge the batteries during periods of low sun. Inverters with integrated AC chargers can also be used in conjunction with petrol-based generators for battery charging or running very large loads. Off grid inverters meant for whole home usage must have appropriate conduit boxes and accessories that enclose live wiring. Usually, whole home inverters are rated at 2000 watts continuous power or more. Off-Grid inverters can be modified sine wave or pure sine wave. Some appliances and many sensitive electronic devices (computers, stereos, etc) will not function properly on modified sine wave inverters. Off grid inverters can cost anywhere between $100 to $3000 USD depending on size and type.
4. Cables, Connectors and Brackets
Everything you need to connect all the pieces and parts together safely and securely!