Installation Manual

6.3. INSTALL CONNECTOR
6.3.1. METALLIC CONDUIT
Place Myers hub through hole as shown in Figure 3 with the o-ring on the
outside of the enclosure. Screw on and tighten the locknut. Next screw on the
grounding bushing, rotate to desired location and tighten set screws. If ground
hub configuration is used, terminate ground wire to ground screw on locknut. If
standard configuration is used screw on grounding bushing (Cooper Crouse-
Hinds HGLL series recommended). Rotate to desired location, tighten set screw
and terminate ground wire to ground lug.
6.3.2. NON-METALLIC LT CONDUIT
Place connector through hole as shown in Figure 3 with the o-ring on the outside
of the enclosure. Screw on and tighten the locknut. Screw Insulated or plastic
bushing onto connector threads to protect conductors from damage. Grounding
bushings are not used with non-metallic conduit.
6.3.3. PVC CONDUIT
Place Cooper Crouse-Hinds male adapter connector (MA-NM series
recommended) through hole. Secure with steel locknut (Cooper Crouse-Hinds 11,
12 etc. - order separately). Grounding bushings are not used with PVC conduit.
7.0 GROUNDING
A ground bar has been provided for the convenience of combining several
grounds into one larger ground wire. Please refer to NEC Article 690 on
grounding PV arrays for specific requirements.
Surge Protection (if equipped)
Surge Protective Device (Thermally Protected) for PV applications
The Surge-Trap PV provides advanced overvoltage protection to photovoltaic
systems, which does not require additional over-current protection due its high
short circuit withstand.
8.0 FUSE SELECTION
Please consult the module manufacturer and/or rating label to select the
appropriate fuse size. Please consult NEC Article 690 for more information. A
maximum of a 15 Amp fuse may be used with this product. Cooper Crouse-Hinds
Combiners are not shipped with fuses unless ordered with fuses.
9.0 OUTPUT CONDUCTOR SIZING
The combiner box output design current is determined by: (total Isc x 156%)
divided by a temperature correction factor. Select the appropriate temperature
correction factor from the NEC. See NEC Articles 310.16 and 690.31 for proper
wire sizing.
10.0 COMBINER WIRING
DO NOT INSTALL FUSES!
• Make ground connections first. This includes source circuit grounds, conduit
grounds, and enclosure grounds if using a metallic enclosure.
• Insert positive input conductor from the source circuit to the Touch Safe fuse
holder and tighten to torque specifications in Table 1.
• Insert negative input conductor from the source circuit to the negative collector
holder and tighten to torque specifications in Table 1.
• Insert positive output wire to the inverter (or other destination) into the positive
output terminal and secure to the torque requirements in Table 1.
• Insert negative output wire to the inverter (or other destination) into the
negative output terminal and secure to the torque requirements in Table 1.
Figure 2 - Suitable Conduit Connectors
Figure 3 - Conduit Connector Exploded View
WARNING
To prevent injury, death, or damage to your photovoltaic system, extreme caution should
be taken whenever entering the control cabinet due to energized components.
Photovoltaic panels generate power whenever exposed to ANY light. Cover the panel
entirely prior to wiring or servicing with an opaque cover.
Prior to installation or servicing, switch all disconnects to OFF position and use only
insulated tools and proper P.P.E.
1”
1”
1”
1-1/4”
Recommended combined conduit output for all size enclosures
Figure 1 - Conduit Entry Locations
1”
1”
1”
1-1/4”
TOP VIEW
BOTTOM VIEW
IF 1598 • 12/10 Copyright © 2010, Cooper Industries, Inc. Page 2
1.00
2.38
6.25
1.00
CAUTION
To prevent damage to your photovoltaic system and equipment, the CCB Series Solar
Combiner Box must have fuses installed into each fuse holder in order to operate
properly.
Cooper Crouse-Hinds recommends the use of Cooper Bussmann DCM Series fuses.
TOP VIEW
Recommended photovoltaic string inputs for
all fiberglass enclosures and steel
enclosures sizes 1-6 string and 7-12 string
Recommended
photovoltaic string
inputs for steel
enclosures sizes
13-20 string and
20-24 string