Chapter 3 ________________________________________________________________  Installation 
 
VAISALA ________________________________________________________________________ 45 
Power Cable 
The interface unit enclosure includes a 3 m power cable with free wire 
ends. 
1.  The power cable should be either connected into the junction box 
mounted below the interface unit's enclosure, or led into the mast 
through the opening in the mast below the rear panel and out at the 
lower end of the mast and further into a local junction box. The 
power cable does not have a cable shield. Make sure to connect the 
wires in the correct way, especially the ones to the protective 
ground (usually yellow/green). See Figure 24 on page 46. 
2.  Connect the power cord to the screw terminals of the AC (mains) 
power switch and the protective ground screw terminal. 
NOTE 
If the line voltage used differs from 230
 V (the initial factory setting), 
check the voltage setting of the FSP103 
AC (mains) power supply 
 VAC and 230 VAC). See Figure 24 on page 46.