TP-6126 8/0252 Section 6 Accessories
Battery Charger Connection Procedure
Hazardous voltage.
Will cause severe injury or death.
Disconnect all power sources before
opening the enclosure.
DANGER
Connecting the battery and the battery charger.
Hazardous voltage can cause severe injury or death.
Reconnect the battery correctly, positive to positive and
negative to negative, to avoid electrical shock and damage to
the battery charger and battery(ies). Have a qualified
electrician install the battery(ies).
1. Verify that power to the ATS is disconnected
(switches or circuit breakers to the ATS are open).
2. Verify that the inline connector to the charger is
disconnected.
3. Clean the battery terminals and check the battery
according to the battery manufacturer’s
instructions.
4. Determine the length of cable needed to connect
the battery to the battery charger and refer to
Figure 6-21 for the required wire size. The
distances shown are the one-way distances from
the charger to the battery.
Note: Use the recommended wire size to prevent
overcharging the battery. Route AC and DC
wiring in separate conduits.
5. Remove the boots and ring terminals from the
battery charger posts.
Maximum
Distance
Wire Size
Battery Charger
Terminal Size
Eyelet Terminal
Part No.
4.5 m (15 ft.) 12 AWG
7.5 m (25 ft.) 10 AWG
No. 10
-283-11
Figure 6 -21 Battery Cable and Terminal
Specifications
6. Slide a red boot onto the red cable and a black boot
onto the black cable. Attach ring terminals and use
a crimping tool to crimp the ring terminals tightly.
7. Determine whether the generator set electrical
system uses 12 or 24 volts. This information is
shown on the generator set nameplate.
8. Connect the jumpers as shown in Figure 6-22 for
a12-volt system or Figure 6-23 for a 24-volt
system, reconnecting the jumper lead for 24-volt
systems as shown. Place the jumper lead terminal
between the two flat washers on the battery
charger terminal.
Note: Battery chargers are configured for 12-volt
systems at the factory. For 24-volt systems,
reconnect the jumper lead as shown in
Figure 6-23 and discard the second jumper
lead.
9. Connect the battery cables as shown in
Figure 6-22 for 12 VDC systems or Figure 6-23 for
24 VDC systems.
Note: The positive (POS, P, +) battery post usually
has a larger diameter than the negative
(NEG, N, --) post.
a. Connect the red POSITIVE terminal of the
battery charger to the positive post of the
battery.
b. Connect the black NEGATIVE terminal of the
battery charger to the negative post of the
battery.
10. Slide the boots over the battery charger posts.
11. Connect the in-line connectors on the battery
charger power cord.
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