STANDARD OPERATING PROCEDURE
String Inverter Installation – Zeverlution Series
Version 1.2 Effective date 02/08/2017
Page 10 of 15
2.
Connect the module leads to the short
input leads of the TS4-R-O unit.
3.
Connected the long output leads of the optimiser to the output leads of the next optimiser.
Secure any wiring loops and loose cables to the module frame or the mounting rails. All optimisers
come with genuine MC4s and so do the modules. If you find non-genuine connectors on either the
module or the optimisers, please contact solarcity immediately. The optimiser’s output leads have
a length of 1000mm which is usually too short for leapfrog wiring. Please use standard daisy chain
wiring for all optimised array sections.
5.3.3
AC Wiring
The inverter is connected to the switchboard using double insulated 3-core cable (2C+E). Circular
TPS should be used to connect the inverter to the AC isolator. Standard TPS cable can be used
for the cable run between switchboard and AC isolator. If no AC isolator is required, use circular
TPS all the way from the inverter to the switchboard. External AC cabling must be run in UV
resistant HD conduit (with the Solar T labelling hidden since it is AC not DC).
The table below shows the conductor cross section and maximum cable length for each inverter.
2.5mm²
4mm²
6mm²
Zeverlution 2000s
15m
25m
40m
Zeverlution 4000
n/a
15m
20m
max. cable length
conductor cross-section
