KACO XP10U-H4 - Manual (Page 20)

I n s t a l l i n g t h e I n v e r t e r
Page 20 Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD
7.3 Making the electrical connections
Make the connection to the PV array and the grid connection via the PCB terminals in the connection area of the inverter.
Maintain the following conductor cross-sections:
AC circuit Inv / PSD L1-L3 / N DC circuit Inv / PSD
Max. conductor cross-section without wire sleeves 6 / (4 / 12) AWG 8 / 6 AWG
Length of insulation to be stripped off 2/5 in 3/5 in
7.3.1 Connecting the inverter to the power grid
DANGER
Risk of fatal injury due to electric shock
Severe injuries or death will result if the live connections are touched.
› Disconnect the inverter from all power sources before you insert the grid power lead into the unit.
CAUTION
Risk of fi re
Insuffi cient over current protection can increase the risk of fi re.
› Connect only to a circuit provided with a branch circuit over-current protection in accordance with the
national electrical code ANSI/NFPA 70.
› XP10U-H4 / PSD*: 15 A (possible fuse size 10 A or 20 A)
› XP10U-H6 / PSD*: 15 A (possible fuse size 10 A or 20 A)
* OCPD rating unchanged with PSD
AC circuit voltage drop of 2% or less is recommended for runs of greater than 60 feet from the point of common coupling (PCC).
AC conductor ampacity calculations are based on the NFPA 70 and additional requirements.
NOTICE
This unit is provided with adjustable trip limits and can be aggregated above 30kW on a single point of
common connection.
NOTICE
The installation shall indicate wiring methods in accordance with NFPA 70 and additional local
requirements.
Use copper conductors only.
NOTICE
When impedance of the AC circuit to the utility connection is high, the voltage at the grid terminals of the
inverter will increase during feed-in to the utility. The inverter monitors this voltage, and if the value
exceeds the country-specifi c threshold value, the inverter will disconnect with an error message.
› AC circuit voltage drop of 2% or less is recommended for runs of greater than 60 feet from the point of
common coupling (PCC).
› AC conductor ampacity calculations are based on the NFPA 70 and additional requirements.