Installation Guidelines
For the minimum and maximum number of Power Optimizers in a PV string (PV
string length), see the Power Optimizer datasheets. Refer to the Designer for PV
string length verification. The Designer is available on the SolarEdge website at:
https://www.solaredge.com/us/products/installer-tools/designer#/
Do not use extension cables between a panel and a Power Optimizer, between two
panels connected to the same Power Optimizer, or between two Power Optimizers
other than in the following cases:
Between a Power Optimizer and a panel:
Extension cables of up to 6 ft / 1.8 m are allowed for all Power Optimizers (3 ft /
0.9 m for DC+, and 3 ft / 0.9 m for DC -).
P-Series Power Optimizers with the 4-type suffix in their part number (Pxxx-
4xxxxxx) and the Mxxxx-Series - extension cables of up to 52 ft / 16 m can be
installed per Power Optimizer (26 ft / 8 m for DC+, and 26 ft / 8 m for DC-).
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. The total length of the extension cables may not exceed
the following values:
Single Phase Inverters
Three Phase Inverters
All - 1000 ft / 300 m
SE9KUS, SE20KUS - 300 m / 1000 ft
SE14.4KUS, SE17.3KUS, SE33.3KUS, SE40KUS -700 m
/ 2300 ft
For connecting homerun DC cables from Power Optimizers to the inverter, use
cables with the following cross-sections:
For MC4 connectors: 8-14 AWG/2.5-10 mm²
For DC terminal blocks inside the inverter or Safety Unit (if applicable): 6-14
AWG/2.5-16 mm²
Frame-mounted Power Optimizers are mounted directly on the panel 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_
The Power Optimizer can be placed in any orientation.
Chapter 2: Installing the Power Optimizers
21
Single Phase Energy Hub Inverter with Prism Technology MAN-01-00842-1.3
Summary of Contents for RESU10H Prime Series
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