Vaisala PTB330 - Manual (Page 34)

USER'S GUIDE____________________________________________________________________
32 __________________________________________________________________ M210855EN-D
Optional Modules
AC Power Supply Module
The AC (mains) power connection may be connected to the power
supply module only by an authorized electrician, unless you order a
unit with a pre-installed power cord. A readily accessible disconnect
device must be incorporated in the fixed wiring.
Figure 20 AC Power Supply Module
Numbers refer to Figure 20 above:
1 = Connect AC (mains) voltage wires to these terminals
2 = Grounding terminal
3 = If the module is not installed in the factory: Connect wires
from these terminals to the POWER 10...36V terminals of the
motherboard.
4 = +
5 = -