Huawei MERC-1300W-P Quick Manual page 8

4. Connect cables between the PV string and the solar inverter.
To ensure reliable communication between the inverter and optimizers, the AC and DC power

cables must be routed in different troughs or pipes with a minimum of 10 cm spacing in
between.
For details about how to configure PV strings with optimizers connected to the inverter, see

section 2.3 "Configuration Principles" in the user manual. Incorrect configurations may cause
serious consequences.
To reduce EMC impact, route the home-run cable next to the cables between the PV modules

(keeping the positive and negative cables close to one another or twisting them together) as
shown in the following figure for either a single string installation or a multi-string
installation.
Required Routing
Minimized
spacing
Solar inverter
Prohibited Routing
Solar
inverter
PV modules
Home-run cable
Home-run cable
Home-run cable
Home-run cable
PV modules
Home-run cable
7
Note: The figure
shows only the
output (OUT)
cables.