SolarEdge SE K Series Installation Manual page 26

Between two Power Optimizers or between a Power Optimizer and the inverter:
Extension cables can be installed between Power Optimizers only from row to
row, around obstacles or pathways within a row and from the end of the PV
string to the inverter. For more information on how to use extension and
adapter cables with power optimizers, refer to
center.solaredge.com/sites/kc/files/se-extension-cables-with-power-optimizer-
application-note.pdf
Frame-mounted Power Optimizers are mounted directly on the module frame,
regardless of racking system (rail-less or with rails). For installation of frame-
mounted Power Optimizers, refer to
http://www.solaredge.com/sites/default/files/installing_frame_mounted_power_
optimizers.pdf.
The Power Optimizer can be placed in any orientation.
If connecting more modules than Power Optimizer inputs in parallel, use a branch
cable. Some commercial Power Optimizer models have a dual input.
Position the Power Optimizer close enough to its module so that their cables can be
connected.
Make sure to use Power Optimizers that have the required output and input
conductor length.
Completely shaded modules may cause their Power Optimizers to temporarily shut
down. This will not affect the performance of the other Power Optimizers in the PV
string, as long as the minimum number of unshaded Power Optimizers connected in
a PV string of modules is met. If under typical conditions fewer than the minimum
Power Optimizers are connected to unshaded modules, add more Power Optimizers
to the PV string.
To allow for heat dissipation, maintain the following clearance:
Three Phase Inverters with Synergy Technology PN: SExxK-xxxxIxxxx
Chapter 2: Installing the Power
https://knowledge-
Optimizers 25