114201I – System Installation Manual
17
Making the Equipment Ground Connection
Each battery cabinet ground (or earth) must be connected to the system’s chassis ground.
You can make this connection at the ground terminals inside the system and the battery
cabinet as follows.
CAUTION
All grounding conductors should be insulated. If you are using non-insulated grounding
conductors, take special care to make sure that the grounding conductors cannot
accidentally contact live wires or the batteries.
In the system, find the ground compression lug labeled
“GROUND”
. This terminal is
next to the AC terminal blocks.
1.
You must supply the equipment-grounding conductor that connects the system
to the nearest (or only) battery cabinet. Strip 0.5” (1.3 cm) of insulation from each
end of the equipment-grounding conductor. Then, connect one end of the
conductor to the ground lug in the system.
2.
At the battery cabinet’s ground lug. Connect the end of the grounding conductor
to this lug.
3.
If the unit has two battery cabinets, you must supply the grounding conductor
that connects the cabinets. Strip 0.5” (1.3 cm) of insulation from each end of this
grounding conductor. Connect one end to the ground lug in the first battery
cabinet, and connect the other end to the matching ground lug in the next battery
cabinet. Repeat this step if you have more than two battery cabinets.
NOTE When you connect a separate equipment-grounding conductor directly to building
steel, use the knockouts that are already on the unit. Do not make a knockout anywhere
on the cabinet where there is not already a knockout.
Electronics Cabinet Battery Block Connections
Do not connect any battery cables at this time. In the following procedure, you should
only make connections to the electronics cabinet’s battery block. Use the battery-wiring
diagram shipped with the battery cables as you follow these steps.
1.
Find the positive battery cable pulled between the electronics cabinet and the
battery cabinet. At the ends of the cable, strip off 0.5” (1.3 cm) of insulation.
Now, look at the battery-wiring diagram. Notice that this cable is connected from
the positive position of the battery terminal block inside the electronics cabinet to
the outside of the fuse block inside of the battery cabinet. Insert the positive (+)
cable into fuse block and into the terminal block. Tighten the connections as
shown on the battery-wiring diagram.
2.
Find the negative battery cable pulled between the electronics cabinet and the
battery cabinet. At the bare end of the cable, strip off 0.5” (1.3 cm) of insulation.
Now, look at the battery-wiring diagram. Notice that this is connected from the
negative position of the battery terminal block inside the electronics cabinet to a
battery inside of the battery cabinet. Insert the negative (-) cable into the
terminal block and insulate the other end that is in the battery cabinet. Tighten
the connection as shown on the battery-wiring diagram.
3.
Repeat step 1 and 2 for each additional battery string (See battery layout
drawing for quantity of battery strings).
