Deka SOLAR Monoblock VRLA System, Installation & Operating Manual

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4
Series/Parallel Wiring
Series and parallel wiring of batteries as well as battery to
inverter/charge controller wiring should be designed to
minimize voltage drop. Wire gauge, wire length as well as
interbattery connection layout are all variables in reducing volt-
age drop as well as providing battery balance between parallel
battery strings.
Proceeding are examples of common wiring layouts with
narrative of the advantages and / or disadvantages of each.
Daisy Chain Wiring a wiring scheme in which multiple
devices are wired together in sequence. All interconnecting
wiring should be of same length to minimize voltage drop.
Disadvantages:
• The interunit cables are required to increase in gauge
size to accommodate the increase in current of each
connected string.
• Maintenance and battery diagnostics require the entire
battery system to be disconnected from the renewable
energy system, leaving no back up energy source.
• Wiring connection assessment difficult to follow with
multiple wirings connected to same battery terminal,
increasing chance of re-connection wiring errors.
Common Bus Wiring a wiring scheme in which same polarity
terminals are connected to a single termination point. All inter-
connecting wiring should be of same length to minimize volt-
age drop.
Advantages:
• Cables can be of same gauge.
• Maintenance and battery diagnostics can be performed
on a single string while maintaining a level of back up
energy source from the other strings staying connected
to the renewable energy system.
• Wiring connection assessment simplified by single
ONLY TRAINED AND AUTHORIZED PERSONNEL SHOULD
INSTALL, REPAIR OR CHARGE BATTERIES.
When used properly, a lead-acid renewable energy battery is a safe, dependable source of electrical
power. However, if proper care and safety precautions aren’t exercised when handling a battery, it can
be an extremely dangerous piece of equipment.
There are four hazardous elements in a lead-acid battery: sulfuric acid, explosive gases, electricity, and
weight.