7
Battery powered with trickle charging
Due to the high cost of long runs of heavy cable, it may be more economic in some
installations to operate the gates from a larger battery, which is charged from a remotely
located trickle charger.
For example, a 16V ac 500 mA plug pack can be located at the house, with appropriate
wiring to the gate, controller, and battery some distance away. Due to varying gate loads
and duty cycles for each installation, this is a guide only.
Wiring
All wiring must be arranged to prevent water entering the controller enclosure.
Do not wire mains voltages and low voltage control wires in the same conduit.
Low voltage cable sizes
Voltage will drop along low voltage cables over long distances. It is recommended to use
cable with conductors of the following minimum cross sectional areas. The table lists
lengths for twin-core cable, from the supply to the load.
For an optional solar panel, consider the total length from the panel to the controller board,
through to the battery. Follow the table for minimum recommended conductor sizes for
given lengths for each power option.
Cable length From separate transformer/
solar panel to 12 V battery
(for max 2% volt drop)
From controller to each
motor 12 V @ 4 A max
(for max 5% volt drop)
3 m
1.0 mm
2
1.5 mm
2
5 m
1.0 mm
2
2.5 mm
2
10 m
1.0 mm
2
4.0 mm
2
15 m
1.0 mm
2
6.0 mm
2
20 m
1.0 mm
2
10 mm
2
25 m
1.5 mm
2
10 mm
2
30 m
1,5 mm
2
16 mm
2
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