Batteries; Battery Types; Battery Cable Sizing; Table 2-3 Battery Charge Profiles - Xantrex TR1512-120-60 Installation Manual

Batteries

Battery Types

Battery Cable Sizing

975-0367-01-01
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The Trace Series can support either 12-volt or 24-volt battery banks depending on
the model. Before proceeding, ensure you have the appropriate sized batteries for
this inverter. The Trace Series will charge flooded lead-acid, or sealed Gel/AGM
lead-acid batteries so ensure that your batteries are in one of these categories.

Table 2-3 Battery Charge Profiles

Profile Description
Flooded Flooded lead-acid
Sealed Gel/AGM lead acid
Information regarding battery types, battery bank sizing and configuration can be
found on the Xantrex website under the Application Note titled "Battery Banks for
Inverter Systems".
Proper cable sizing (diameter and length) is critical to the safe and efficient
operation of an inverter system. Larger diameter cables (smaller AWG number)
have less voltage drop and are, therefore, more efficient when transferring power
to and from the batteries. If a cable is undersized (diameter too small), it could
potentially overheat, creating a fire hazard.
Cable length is another important factor. Runs should be kept as short as practical.
Longer cable runs increase resistance, thus lowering the overall efficiency of the
system. This is especially true in lower voltage systems (i.e., 12 Vdc) where,
depending upon the length of the cable run, it may be necessary to oversize the
diameter of the wire, or parallel (double) the cables.
Important:
Only use copper cables. Always use a properly sized cable and length rated
for the amperage of the inverter and batteries.
WARNING: Fire Hazard
Undersized cables can overheat and melt, creating a fire hazard when subjected to heavy
(peak) loads.
Table 2-4 provides recommended minimum cable sizes for various cable lengths
and inverter amperages. Refer to your local electrical code requirements as
recommendations may not meet all codes. The 1 – 5 ft. (30.5 – 152 cm) column
refers to the minimum cable sizes for a North American code compliant
installation. Cable sizes covering install lengths in excess of 5 ft. (152 cm) are
Xantrex recommendations that account for DC voltage drop. DC cable runs in
excess of 10 ft. (305 cm) one-way are not recommended.
This manual for use by qualified installers only
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Bulk/Absorption Equalize
12V 24V 12V
14.6 29.2 16
14.1 28.2 N/A
DC Wiring
Float
24V 12V 24V
32 13.4 26.8
N/A 13.5 27.0
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