STRCOM Fused String Combiners
Installation and Operation Manual
DOC-020040 rev 4.4
7
Because the unit has a NEMA4 rating, it can be mounted outdoors.
The combiner is designed to be mounted vertically with all the conduits entering and exiting
the b
ottom (6 x 20”) of the unit. It can be mounted flat as well, but pay extra attention to seals.
Install the combiner in an accessible location following NEC codes for enclosure and
disconnect door clearances and proximity to other equipment. (See mounting diagram, Fig. 2a
and 2b)
Although not required, installation at waist or chest height allows easiest access and keeps the
unit above potential snow line or drifts. Installer sometimes prefer lower installation heights
for aesthetics or wind-loading reasons.
Although not required, the combiner and fuses will remain most cool if the combiner is located
in shade or partial shade from the array, roof equipment vault, walk-up or other equipment on
the roof.
CAUTION:
Please follow these guidelines:
The combiner weight is 40 lbs. Be sure to verify load capacity of wall mounting area.
Allow at least 1” clearance around sides and at least ¼” space at back (the depth of the
mounting tabs) for cooling considerations in extreme conditions.
Be sure to leave am
ple space for conduits to enter and exit the bottom (6”x20”) of the unit.
Although less recommended for outdoor applications, if any conduits are entering or exiting
the right side for PV connections, be extra careful with the installation of the NEMA4 liquid-
tight conduit fittings to be sure that they are very well sealed.
3/8” Holes for
mounting
22.5”
24”
21.5”
23”
Nameplate label
Listing label
Country of
origin flag
Warning
Positive
ground
option label
Slotted Latch(s)
