BIG ASS FANS Powerfoil 8 Plus, Installation Manual

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12’–24’ POWERFOIL ® 8, 12’–24’ POWERFOIL ® 8 PLUS
WWW.BIGASSFANS.COM ©2012 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
28 Electrical Installation (cont.)
Power wiring guidelines (cont.)
WARNING: To avoid a possible shock hazard and/or nuisance tripping caused by induced voltages, unused wires in the
conduit must be grounded at both ends. For the same reason, fan controller output wires should not share a conduit with
another fan controllers output leads, or other power circuits (lighting, motors, etc.).
CAUTION: MC or “Metal clad” cable cannot be used for controller output/motor leads. Both stranded and solid core
varieties must be avoided. Do not use solid core cable of any size or insulation class for motor wiring. Use of such types
of cabling may result in nuisance tripping or premature equipment failure.
AVERTISSEMENT : Pour éviter un risque de choc ou de déclenchement intempestif dus à des tensions induites, les
câbles non utilisés présents dans le conduit doivent être mis à la terre aux deux extrémités. Pour la même raison, les
câbles de sortie du régulateur du ventilateur ne doivent pas partager un conduit avec les câbles de sortie d’autres
régulateurs de ventilateurs ni d’autres circuits d’alimentation (éclairage, moteurs, etc.)
ATTENTION : Ne pas utiliser de câble à gaine métallique pour la sortie du régulateur/l’entrée du moteur. Éviter les câbles
aussi bien de type torsadé que rigide. Ne pas utiliser de câble rigide, quelles qu’en soient la taille ou la classe d’isolation,
pour le câblage du moteur. Ces types de câblage risquent de provoquer un déclenchement intempestif ou une défaillance
prématurée du matériel.
A variety of cable types are acceptable for variable frequency drive installations. For many installations, unshielded cable is adequate
if it can be separated from sensitive circuits. In all cases, parallel runs of control and motor cabling should be avoided when unshielded
cable is used. Do not use cable with an insulation thickness of less than 15 mils.
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Acceptable unshielded types
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limits are provided. Do not use THHN or similarly coated wire in wet areas. Any wire chosen must have a minimum insulation thickness
of 15 mils and should not have large variations in insulation concentricity.
Acceptable shielded types
The drain conductor included with shielded cables must be connected to both the motor frame and the PE/Ground terminal of the
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Location Rating / Type Description
Standard
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RHH/RHW-2
‡ Four tinned conductors with XLPE insulation
‡ Foil shield and tinned copper drain wire with 85% braid
coverage
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Belden 29501-29507 or equivalent
Standard
(Option 2)
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or 194ºF) RHH/RHW-2
‡
Three tinned copper conductors with XLPE insulation
‡
5 mil single helical copper tape (25% overlap minimum) with
three bare copper grounds in contact with shield
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or 194ºF) RHH/RHW-2
‡ Three bare copper conductors with XLPE insulation with
impervious corrugated continuously welded aluminum armor
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Three copper grounds on #10 AWG and smaller
Maximum cable lengths
To prevent nuisance trips, the distance between the controller and the fan should not exceed 400 ft (122 m).
Output disconnects
A device, such as a contactor, that routinely disconnects and reapplies output power to the motor for the purpose of starting and
stopping the motor cannot be used.
Recommended wire size
A minimum of 14AWG is acceptable for motor leads.
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Power feeders to controllers must be
governed by the fuse size included with the fan controller and/or required circuit breaker.