Introduction
8
900-0184-01-00 Rev A
Components
NOTE:
This manual depicts the use of a negative-grounded system. For positive grounding,
see page 18.
Combiner
Figure 2
Components of Combiner Box
1
2
3
4
5
6
7
8
9
10
11
8
10
1
Gasketed Door/
Type 3R Enclosure Protects from the environment
12
Ground Cable
Terminal
Provides “lay-in” lug for optional
pass-through ground wire
2
Component Panel
(Removable)
For ease of wire management
and for serviceability
13
Fuse Holders
PV source overcurrent protection;
fuses provided by user
3
Bidirectional PV
Contactor
Opens PV circuits for AFCI and
for local or remote disconnect
14
Combiner Control
Board
Controls all functions within the
combiner; commands the contactor
4
Ground Terminal
Bus Bar
Provides a means for system
and equipment grounding
15
Arc Fault
Self-Test Button
Allows AFCI to be tested without
opening the combiner box
5
Negative
Terminal Bus Bar
Combines negative PV
source circuits
16
PV Input
Connections
Connections for positive PV
source circuits
6
PV Positive
Output Terminal
Connection for PV positive
output circuit
17
Communications
Terminals
Communicates with RSI and
additional combiner boxes
7
Internal
Prewiring
Factory-installed for ease of
installation
18
AFCI
Annunciator
Illuminates during an
arc fault event or test
8
PV Combiner
Disconnect
Activates the contactor for
disconnection; can be
padlocked in the OFF position
19
2” EKO
(PV Output)
Accommodates conduit and a
UL 514-compliant fitting for
PV output circuits
9
Arc Fault
Detection Device
Detects series DC
arc fault events
20
Cable Glands
(PV Input)
Provide waterproof strain relief for
PV source circuits
10
Secure
Latch
Fastens door;
can be padlocked
21
½” EKO
(optional)
For installation of a third-party surge
protection device (provided by user)
11
Securing Screw
Secures door in place if
padlock is not used
22
½” and ¾” (2 ea) EKO
(Communications)
Accommodate conduit and a
UL 514-compliant fitting for
communication wires
22
13
14
15
15
16
17
18
18
20
12
19
21
NOTE: All external wires
are provided by installer
