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18 PNEG-524 Roof Exhaust Fan
7. ELECTRICAL INSTALLATION
Electrical Installation of the Fan
The electrical installation must be performed by a certified electrician in accordance with the
appropriate national and local electrical codes.
ANY VIOLATION OF ELECTRICAL WIRING CODES COULD JEOPARDIZE THE
AIRSTREAM WARRANTY.
Check the type of electrical service present, and make sure the fan to be wired is manufactured
to operate on the electrical service. The table on page 7 entitled “Fan Model Specifications”
indicates the electrical service the fan is designed to utilize in the column labeled “Motor Phase
and Voltage”. The electrical service must match this specification.
The components to connect the electrical service to the fan need to be sized for the electrical
service present. The charts below illustrate the sizing information for single phase 230 volt, three
phase 230 volt and 460 volt respectively. Use the appropriate information and size the following
electrical service components:
Electrical Service for Single Phase Operation 230 Volt
Electrical Service for Three Phase Operation 230 Volt
Electrical Service for Three Phase Operation 460 Volt
Transformer
The transformer size for the fan only is indicated in a KVA rating. Example: For a 24" fan the first
chart would be used. The KVA rating for the 2 horse power motor is 3.5 KVA. This KVA rating is
for the fan only. Your electrician will need to add the KVA requirements for the other electrical
components of the system in sizing the transformer.
Motor
H. P.
Range
Transformer Size
(Note B) (Minimum)
Copper Wire Size for Distance-Motor to
Disconnect in Feet up to:
Fusetron or
Equivalent Time
Delay Fuse AMP
0' - 50' 100' 200' 300'
0.5 1.0 KVA 14141210 10
2.0 3.5 KVA 12 10 6 5 30
Motor
H. P.
Range
Transformer Size
(Note B) (Minimum)
Copper Wire Size for Distance-Motor to
Disconnect in Feet up to:
Fusetron or
Equivalent Time
Delay Fuse AMP
0' - 50' 100' 200' 300'
0.5 1.0 KVA 14141414 10
2.0 3.5 KVA 141210 8 15
Motor
H. P.
Range
Transformer Size
(Note B) (Minimum)
Copper Wire Size for Distance-Motor to
Disconnect in Feet up to:
Fusetron or
Equivalent Time
Delay Fuse AMP
0' - 50' 100' 200' 300'
0.5 1.0 KVA 14141414 10
2.0 3.5 KVA 14141212 10
WARNING