Contemporary Control Systems BASrouter Installation Guide (Firmware 2.x) - Manual (Page 7)

TD071200-0IK
7
3 Power
The BASRT-B requires 24 VAC or 24 VDC (see Figure 6)
while drawing no more than 4 VA of power. The recommended
conductor size is 16–18 AWG. COM is directly connected to
zero volts and the chassis is DC isolated from zero volts. Input
connections are reverse-polarity protected.
Figure 6 — Power Options
WARNING: Powering devices can present hazards. Read the
following text carefully.
3.1 POWER SUPPLY PRECAUTIONS
Internally, the router utilizes a half-wave rectifier and therefore
can share the same AC power source with other half-wave
rectified devices. Sharing a common DC power source is also
possible. Sharing AC power with full-wave rectified devices is
NOT recommended. Full-wave rectified devices usually require
a dedicated AC power source that has a secondary elevated
above ground. Both secondary connections are considered HOT.
AC power sources that power several half-wave devices have a
common secondary connection called either COMMON, LO, or
GROUND. This connection might be tied to frame ground or
earth. The other side of the secondary is considered the HOT or HI