Grain Systems Bin Accessories PNEG-524 - Manual (Page 24)

24 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.
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 11 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
1 Phase 230 Volt , 3 Phase 230 Volt
and 460 Volt respectively. Use the appropriate information and size the following electrical
service components:
Electrical Service for 1 Phase Operation 230 Volt
Electrical Service for 3 Phase Operation 230 Volt
Electrical Service for 3 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 HP motor is 3-1/2 KVA. This KVA rating is for the fan only.
The electrician will need to add the KVA requirements for the other electrical components of the system
in sizing the transformer.
Motor
HP 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 14 14 12 10 10
2.0 3.5 KVA 12 10 6 5 30
Motor
HP 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 14 14 14 14 10
2.0 3.5 KVA 14 12 10 8 15
Motor
HP 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 14 14 14 14 10
2.0 3.5 KVA 14 14 12 12 10
CAUTION
Any violation of electrical wiring codes could jeopardize the airstream warranty.