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40 975-0004-01-02 Rev D
Minimum Recommended Wire Gauge
The minimum recommended wire gauge is:
• C35 and C40 Models:
#8 AWG with a 75 °C (167 °F) insulation rating
• C60 Models:
#6 AWG, with a 90 °C (194 °F) insulation rating
The terminals on the C-Series will accept up to #2 AWG
(33.6 mm
2
) copper or aluminum wire. However, UL
specifications only allow the use of up to #6 AWG
(13.3 mm
2
) maximum.
No crimp-on terminals or lugs are required.
Surge Protection
Since PV arrays are often mounted on an elevated structure
and thus are more susceptible to lightning strikes, protection
from lightning-induced power surges and other transient
power disturbances between the PV array and the C-Series
Figure 2-22
AWG Wire Gauge Reference Chart
Important:
Figure 2-22 is for reference only. Sizes shown are
for the conductor. Do not include any insulation when
determining your wire size. Due to printing anomalies, these
dimensions may not be to scale.
12
.072
10
.115
8
.146
6
.184
4
.235
14
.073
Size
D
iameter
3
.281
2
.295
3/0
.475
4/0
.530
2/0
.420
1
.335
1/0
.380
Size
Diameter