Instruction manual

WS-PRO2 Weather Station Manual
GT
27176
Page 20 of 61
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.
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”
diameter copper-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.
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 the weather station. This cable shall be routed through the 1
½” dia. long sweep elbow to the base of the weather station. All wire
connections and splices in the power wiring shall be made using 3-M DBY
direct burial connectors. DO NOT apply power to transformer at this time.
WIRE SIZE Distance (feet*)
18 500
16 800
14 1275
12 2000
10 3250
8 5100
POWER WIRE SIZING CHART
* Transformer to Weather Station
3.4.0 Communication Wiring
3.4.1 Direct Connect – Short Haul Modems
Coming from the Central location, furnish and install a Belden
#9883, Direct Burial Type, communication cable over to the
weather station location. The Belden cable shall consist of three
(3) twisted pair of wires (20 Gauge), a bare copper drain wire and
an aluminum shield. The three (3) twisted pair shall be color