Xantrex SW4024 Dual Inverter Power Panel A cost-effective alternative to assembling everything yourself. These power panels pre-assembled by Trace are usually cheaper than buying separate pieces and putting them together yourself. Panels are available in a range of capacities, DC inputs and AC output configurations and are certified to UL standards by ETL Testing Laboratories as a complete system. If you are looking to assemble your own system, we'd suggest buying a power panel system. It'll save you time, frustration, money and some of the potential dangers of assembling it all yourself. While picking out the right power panel system for yourself, be sure to look at the options available. Add the option to your cart before you check out and they will be included (assembled) with your power panel before it is delivered to you. (Hint: Adding the C40 charge controller option to your power panel - which most folks who are going to use solar panels need anyhow - will greatly speed up the delivery of your order. Why? Trace usually has many panels with the C40 installed already made up and in stock.) In most cases, you will want to add at least the C40 charge controller option so that you may regulate the charge from your solar panels to your batteries. We've noticed there's been some confusion due to the reference to the AC charge controller built-in to the inverter. This is a feature that allows your system to work essentially as a large UPS (backup power system). When the power from the grid is functioning, the inverter works as a charge controller (using the AC electricity from the grid) and keeps your batteries topped off. When the grid's power fails, the inverter then works as an inverter and uses the energy from the charged battery array supplies AC power to your home. Power Panel Options Part Number Description (* = Recommended for solar powered systems) PPO-C40 C40 DC charge or load controller installed, includes pre-wired 60 amp DC breaker(add this option if you are planning to use your power panel in conjunction with solar panels)* PO-DVM/C40 Digital meter with LCD display installed on the front of the C40. Tells the charge level off your batteries as charged by your solar panels. Measures volts, amps and amp-hours.* PPO-CD15 15 amp DC load breaker pre-wired and installed in the DC disconnect PPO-CD20 20 amp DC load breaker pre-wired and installed in the DC disconnect PPO-CD60 60 amp DC load breaker pre-wired and installed in the DC disconnect PPO-BC5-2/0 5 foot 2/0 AWG battery cable pair with ring terminals (battery side only) and flexible conduit PPO-BC10-2/0 5 foot 2/0 AWG battery cable pair with ring terminals (battery side only) and flexible conduit PPO-BC5-4/0 5 foot 4/0 AWG battery cable pair with ring terminals (battery side only) and flexible conduit PPO-BC10-4/0 10 foot 4/0 AWG battery cable pair with ring terminals (battery side only) and flexible conduit PPO-BC15-4/0 15 foot 4/0 AWG battery cable pair with ring terminals (battery side only) and flexible conduit Note: Due to size and weight this item must ship via truck.