8
Installation and Maintenance Instructions
Model 450EWBX-024 Electronic Horn
Wiring the Horn
SHOCK HAZARD: To avoid electrical shock hazards, do not
connect wires when power is applied. Failure to heed this
warning may cause serious injury or death.
WIRING PRECAUTION: National Electrical Codes as well as
local codes must be adhered to in the installation of the Model
450EWBX-024 horn. All electrical wiring must be routed through
approved conduit and fittings as specified. Failure to heed
this warning may cause an electrical shock or render the horn
inoperable, causing serious injury or death.
WIRING PRECAUTION: Refer to NFPA 70 (NEC) and CSA C22.1
Canadian Electrical Code, Part 1, Safety Standard for Electrical
Installation, Section 32. Failure to heed this warning may cause
an electrical shock or render the horn inoperable, causing serious
injury or death.
For power connections, use only wire sized 12 AWG to 18 AWG
(2.5 mm
2
to 1.0 mm
2
). Strip no more than 0.25
"
(6 mm) of
insulation from the ends of the power wires. Torque the terminal
screws to 4.5 in-lb (0.51 Nm) maximum.
NOTE:
This device is polarized by a diode for use in supervised
systems.
To wire the horn:
1.
Connect the positive (+) lead from the power source to one of
the positive terminals of the connector plug.
2.
Connect the negative (-) lead from the power source to one of
the negative terminals of the connector plug.
3.
See Figure 2. Connect the remaining positive (+) and negative
(-) terminals on the connector plug to the next horn or an end-
of-line device.
