33
Cross Section
of AC Wires
WARNING! An electric shock can be fatal. Inadequately sized
electrical components can cause serious injuries to persons
and damage to (or loss of) property.
- All electrical installations must be in accordance with the
National Electrical Code, ANSI/NFPA 70, and any other
codes and regulations applicable to the installation site.
- For installations in Canada the installations must be done in
accordance with applicable Canadian standards.
- Use minimum AWG 14 to maximum AWG 4, min. 167°F
(75°C), copper wire for all AC wiring connections to the
Fronius IG Plus. Voltage drop and other considerations may
dictate larger size wires be used.
- Use only solid or stranded wire. Do not use fine stranded
wire.
Fronius IG Plus AC wire AC wire AC wire
208 V 240 V 277 V
3.0-1 AWG 12 AWG 14 AWG 14
3.8-1 AWG 12 AWG 12 AWG 12
5.0-1 AWG 8 AWG 10 AWG 12
6.0-1 AWG 8 AWG 8 AWG 10
7.5-1 AWG 6 AWG 6 AWG 8
10.0-1 AWG 4 AWG 4 AWG 6
11.4-1 AWG 4 AWG 4 AWG 4
11.4-3 AWG 8 AWG 8 -
12.0-3 - - AWG 12
Minimum cross section of AC wires (all calculations based on ambient temperature of
122 °F / 50 °C).
Safety Only an authorized electrician is permitted to connect this inverter to the
public grid.
WARNING! An electrical shock can be fatal. Danger from grid
voltage and DC voltage from solar modules.
- The connection area should only be opened by a licensed
electrician.
- The separate power stage set area should only be discon-
nected from the connection area after first being discon-
nected from the grid power.
Never work with live wires! Prior to all connection work, make
sure that the AC and DC wires are not charged.
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