Gasboy WGT Outdoor Unit User Manual
Page 12
WGT Manual
1-4
Figure 1-3. WGT Box Cable Installation
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An external AC to DC or DC to DC switching power supply shall be use to operate the WGT. This
power supply should be 12V to 28V DC output. The adaptor should be approved according to the
local regulation. In North America use a AC to DC NEC Class 2 power supply, low voltage and
low current maximum 100 VA even under fault conditions. The power supply can be installed in
the office, in the pedestal, in the tanker truck cabin (DC to DC power supply) or in a separate box.
DC cable will be connected to the DC input in the WGT box.
Note: If power supply installed far from WGT box, make sure the WGT get a correct voltage due to
power fail on the lines!
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The WGT Box has power input and optional data (LAN or other) input/output. The LAN cable will
be connected to the station network LAN only in case the WGT is a master WGT. The other I/O
plugs (RS-232 and RS-485) will be connected only by certified technician for maintenance use
only.
The cables must be placed in dedicated tubes which comply with UL/EU regulations and any other
local regulations. The cables enter the WGT box from the sealing adapters which used to ensure the
box sealing as shown in Figure 1-3.