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6.3.4.2.1 Battery Capacity
Another important factor of battery selection is capacity, which is expressed in
amp hours (Ah). This value represents the quantity of energy a battery can
store. The required battery capacity depends on individual site requirements
and factors such as location, wind availability, power consumption, power
generating systems, etc. Consult your battery supplier for assistance with
questions regarding load support, battery selection and installation.
Follow all manufacturer recommendations when selecting a location for your
battery installation. Charging flooded lead-acid batteries generates flammable
and potentially explosive hydrogen gas. Unsealed lead-acid batteries have
vent caps to release this gas, which can detonate if it is mixed with air and a
spark is present (from an electrical switch for example) or other ignition source
(open hot exhaust).
Never install batteries in a location where the danger of spark
formation exists. Ensure battery installations are provided adequate
ventilation at all times.
Batteries store a large quantity of energy, which can be suddenly discharged
in the event a battery is accidentally shorted. This sudden discharge can
destroy the battery (resulting in the release of battery acid and gas) and even
set the battery and cabling on fire. To protect against accidental short-
circuiting, do not attach battery terminal connections until all work on the
electric system has been completed.
Never short-circuit the battery or terminals across a bank of
batteries!
Connect cabling to battery terminals only after all work on the
electrical system has been completed.
6.3.4.3 Protection
Fuses (or appropriate circuit breakers) must be installed in the positive (+)
wires to the battery to protect the system against excessive current and/or
short-circuits. For fuse installation requirements, refer to the wiring diagrams
provided in Section 6.2 and Section 6.3.5.5. As a fuse can cause an electrical
spark when failing (blowing) do not install fuse holders in the same area as
the battery or bank.
Use caution when handling battery acid, adding distilled water or performing
other battery maintenance. Follow all battery manufacturer instructions and
wear protective clothing and suitable eye protection.
Use caution when conducting battery maintenance.
Wear protective clothing and suitable eye protection.
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