Solar PV Tiles – Installation Instructions
18 July 2012
Page 4 of 13
2 PRELIMINARIES
2.1 CIRCUIT DIAGRAM & LAYOUT
Before starting please check the circuit diagram to confirm the required layout of the PV tile
array and the associated electrical connections between PV tiles and also back to the DC to
AC Inverter. Redland Solar PV tiles are connected in electrical series in strings with each
string having its own connections back to the inverter. The PV tile connectors and cables
provided must be used for the series connection of the PV tile columns. PV tiles come with
pre-wired connectors for tile-to-tile connections within a PV column. Additional PV tile cables
are available in two lengths – 2 m cables for tile-to-tile connections between columns and 10
m cables for tile-to-inverter connections. A circuit diagram showing the recommended cabling
plan (not to scale) for a single string array of 8 PV tiles is shown below.
For Redland Solar PV tiles, the recommended direction of cabling within a string is in column
fashion, from bottom to top, then top to bottom in adjacent column, and then bottom to top
again, and so on as you work across the PV array with the PV tile columns running from right
to left. The pre-wired connectors attached to the PV tiles should be used for all the electrical
connections up or down a column. 2 m cables should be used for connecting PV tile columns
to each other; connections between adjacent PV tile columns should be made top-to-top,
then bottom-to-bottom, then top-to-top, and so on as you work across the PV array. The 10 m
cables should be used to connect the first and last PV tiles in the string to the inverter. As a
rule of thumb, the 10m cables should be long enough for the connections to the inverter for
PV tile arrays up to 4 columns of PV tiles wide; for wider PV tile arrays it may be necessary
to use longer inverter cables. Monier Limited can also supply 25m inverter cables if required.
Note that for all electrical connections the pre-wired connectors and cables are used to
connect from the + terminal to the - terminal in electrical series.
