QUESTION 3 Problem Introduction - No Answer Is Required For This Item in series. Each string connects to an MPPT input on an inverter. The AC output of the inverter connects to the home's power distribution panel. Though a PV system is being installed on a residential rooftop in Columbia, South Carolina. As shown in Fig. 1, the system has two strings of eight 300 W modules. AC disconnect and overcurrent protection device (OCPD) on the CS6K-300MS modules can be seen in the datasheet - a link is provided. The PV array is mounted to a roof surface that points due south and has a 34° slope from the horizontal. There are no sources of shading of the array. Details:
Grid
300Wx8
Inverter with 2 MPPT inputs
AC Disconnect
OCPD
300Wx8
J-box
Canadian Solar
40 ft length
6 ft length
CS6K-300MS Modules 2 wires + GND in each conduit
From inverter to Panel 8 in series string
Each conduit runs 2 above roof distribution panel
Figure I. Top-level view of residential PV system
You are going to be asked to help in some of the balance of systems calculations needed to complete the details of the design such as the choice of wire gauges and specification of inverter characteristics.
Design Information
Table 1. Weather data needed to install code-compliant PV systems Columbia Metro Airport
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