Rain Bird WS-PRO, Installation, Maintenance And Troubleshooting Manual

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5.0 EXTERNAL WIRING TO WEATHER STATION: ( Refer to FIGS. 6 & 7)
WIRING VALVE ACCESS BOX
At the base of the Weather Station and
as near to the base as feasibly possible,
dig a hole large enough to install a
standard 18” x 24” rectangular valve box
and cover. The valve box shall
accommodate all wiring connections,
one rod of a 3-rod grounding grid,
MGP-1 grounding plate assemblies and
MSP-1 surge arrestors.
WEATHER STATION
POWER WIRING
Furnished as part of the Weather Station
is a
120VAC to 16VAC power
transformer. This transformer can be
located in the pedestal of a field satellite
controller that is in the near proximity of
the weather station or some other
convenient weather proof location.
Install the transformer in a
4”x 4” metal
electrical box with cover. Connect the
120VAC power wires of the transformer
to a source of 120VAC power that is not
easily turned off. To the output of the
transformer, connect a pair of UF wires,
of proper size, using “crimp-on” open
spade connectors.
clad, ground rod - one of a 3-rod
grounding grid.
NOTE ! The minimum voltage to
the transformer shall be not less than 112
volts.
Wire sizing shall be in accordance with
the chart given below.
Wire shall be Type “UF” (underground
feeder cable) with PVC insulation. The
16VAC power is used to provide
constant charging of the battery within
the weather station, through the battery
charging circuit.
WIRE SIZING CHART
WIRE SIZE DISTANCE
(feet)*
18 500
16 800
14 1275
12 2000
10 3250
8 5100
The power wires shall be direct buried
and run over to the weather station.
Connect the 16VAC power wires to the
“
LINE ” side of an MSP-1 surge
arrestor, which shall be mounted in an
MGP-1 grounding plate assembly. The
MGP-1
grounding plate assembly shall be
securely mounted on a 5/8” dia. copper
* Transformer to Weather Station
The “ EQUIPMENT’ side of this MSP-1
surge arrestor shall be connected to
“red” and “black” wires of the 20’power
wire cable, which is furnished as part of