FloAire NSA - Manual (Page 7)

7
Copper Wire Ampacity
Wire Size AWG Maximum Amps
14 15
12 20
10 30
8 50
6 65
4 85
Electrical
Before connecting power to the fan, read and understand this
entire section of this document. As-built wiring diagrams are
furnished with each fan by the factory, and are attached either
to the door of the unit or the blower.
Electrical wiring and connections should be done in
accordance with local ordnances and the National Electric
Code, ANSI/NFPA70. Be sure the voltage and phase of the
power supply and the wire amperage capacity is in accordance
with the motor nameplate. For additional safety information
refer to AMCA publication 410-96, Recommended Safety
Practices for Users and Installers of Industrial and Commercial
Fans.
1. Always disconnect power before working on or near a
fan. Lock and tag the disconnect switch or breaker to
prevent accidental power up.
2. An electrical drop containing the line voltage power
wiring is shipped with every fan. The electrical drop
should be brought through one of the conduit openings
located in the base of the unit, run through the curb,
and connected to a junction box inside
the building.
3. A dedicated branch circuit should supply
the motor circuit with short circuit
protection according to the National
Electric Code. This dedicated branch
should be run to the junction box
mentioned above and connected as
shown in a following illustration labeled
“Fan to Building Wiring Connection”.
4. Make certain that the power source is
compatible with the requirements of your
equipment. The fan nameplate identifies the proper phase and voltage of the motor.
5. Before connecting fan to building power source, verify power line wiring is de-energized.
6. Secure the power cable to prevent contact with sharp objects.
7. Do not kink power cable and never allow the cable to come in contact with oil, grease, hot
surfaces or chemicals.
8. Before powering up fan check fan wheel for free rotation and make sure that the interior of the fan
is free of loose debris or shipping materials.
9. If any of the original wire supplied with the fan must be replaced, it must be replaced with type
THHN wire or equivalent.
WARNING!!
Disconnect power before
installing or servicing fan. High
voltage
electrical input is
needed for this equipment. This
work should be performed by a
qualified electrician.