7-8
Positive (+) Battery Connection.
Connect one
end of the positive (+) battery cable to the genset B+
post. Tighten the B+ connection securely (see Fig-
ure 7-8 on Page 7-7).
Route battery cables away from fuel lines and hot
engine exhaust components. Battery cable should
be accessible for inspection and replacement, pro-
tected from damage and secured to prevent chafing
due to vibration.
WARNING
Routing battery cables with fuel
lines can lead to fire and severe personal injury
or death. Keep battery cables away from fuel
lines.
CAUTION
Failure to secure the battery cable
terminals can result in personal injury and/or
equipment damage from an electrical short. See
that terminal connections are secure. If
necessary, secure cables to prevent abrasion.
Genset Bonding Terminal
The genset ground, as shown in Figure 7-8 on Page
7-7, is also the bonding terminal for grounding the
genset to the vehicle frame (ground). This connec-
tion must be made for proper and safe operation of
the genset. Onan recommends that this connection
be made in one of two ways based on which nega-
tive battery connection method was used.
Method 1.
If the genset negative battery connection
is made with a single cable connected between the
genset ground and the negative (-) battery terminal
(see
Negative (-) Battery Connection
on Page
7-7), an additional bonding connection must be
made. Connect an 8-AWG (minimum) cable be-
tween either:
• the genset ground (see Figure 7-8) and the ve-
hicle frame (ground).
• the negative (-) battery terminal and the ve-
hicle frame (ground).
Method 2.
If the vehicle frame (ground) is used as a
path for the negative (-) genset-battery circuit (see
Alternate Negative (-) Battery Connection
on Page
7-7), the negative cable between the genset and
the vehicle frame (ground) serves as the bonding
connection. However, this cable must be of the
same size as the positive (+) battery cable.
NOTE: Make sure that the frame (ground) con-
nections (to major frame members, if possible)
are secure enough to minimize electrical
resistance. Avoid making these connections at
welds or mechanical joints.
WARNING
Failure to ground the genset prop-
erly can result in injury or death. The genset
must be grounded to the vehicle frame.
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