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PVI 50/60 TL Installation and Operation Manual (Rev C)
DOCR-070645-E
Page 35 of 102
WARNING:
Working with live voltage is dangerous. It is recommended to have all
live circuits disabled prior to performing connections.
Table 2.8 - DC Input Configuration
*Note that the provided fuse is 15A, your string combination may require a
larger rated fuse. Always verify the I
sc
rating of the input prior to connecting
to the fuse holder.
**Mixed input signifies a combination of fuse holder connections and fuse
bypass terminal utilization. Such combinations are very rare, but possible.
The wire size for the fuse holder connection is #10-8 AWG (30 in-lbs) and up
to #2 AWG for the bypass terminal (50 in-lbs).
NOTE:
The temperature rating of the input wiring should be 90
℃
or greater.
(d) Check the polarity of each PV string pair (Figure 2.26) before connecting to
the DC fuses or fuse bypass points by following these steps:
i.
Using a multi-meter: connect the positive lead from the multi-meter to the
positive lead from the string and the negative lead from the multi-meter to
the negative lead from the string. If the value on the multi-meter is
DC
Inputs
Configuration for
each MPPT zone
Z1/Z2/Z3
DC Wire
Size
Conductors
Torque
Connect to:
15
5/5/5
#10-8AWG
30 in-lbs
PV Fuseholder
14
5/5/4
#10-8AWG
30 in-lbs
PV Fuseholder
13
5/4/4
#10-8AWG
30 in-lbs
PV Fuseholder
12
4/4/4
#10-8AWG
30 in-lbs
PV Fuseholder
11
4/4/3
#10-8AWG
30 in-lbs
PV Fuseholder *
10
4/3/3
#10-8AWG
30 in-lbs
PV Fuseholder *
9
3/3/3
#10-8AWG
30 in-lbs
PV Fuseholder *
8
3/3/2
#10-8AWG
30 in-lbs
PV Fuseholder *
7
3/2/2
#10-8AWG
30 in-lbs
PV Fuseholder *
6
2/2/2
#10-8AWG
30 in-lbs
PV Fuseholder *
5
2/2/1
Mixed**
Mixed**
Mixed**
4
2/1/1
Mixed**
Mixed**
Mixed**
3
1/1/1
Up to #2
AWG
50 in-lbs
Bypass
terminals
2
1/1/0
Up to #2
AWG
50 in-lbs
Bypass
terminals
1
1/0/0
Up to #2
AWG
50 in-lbs
Bypass
terminals