2 - Big Ass Fans

Delta secondary8’–24’ POWERFOIL ® X2.0 WASHDOWN & POWERFOIL ® X2.0PLUS WASHDOWNElectrical Installation (cont.)27models rely on internal references made between each incoming phase and ground. To prevent nuisance tripping such as“phase B,” terminates on “L2” of the fan controller’s input power terminals.open). Proper fan operation cannot be guaranteed due to a lack of proper phase-to-ground voltage references.There are many different arrangements available for industrial and commercial power distribution in North America. The most commonare the following:• 575V/330V Three-Phase (Wye Secondary). Provides 575V between phases, and 330V from each phase to Neutral/Ground.• . Provides 480V between phases, and 277V from each phase to Neutral/Ground.• 208V/120V Three-Phase (Wye Secondary). Provides 208V between phases, and 120V from each phase to Neutral/Ground.• . Provides 240V between phases for three-phase loads, 120V from phase “A” and“C” to Neutral/Ground, and 208V from phase “B” to Neutral/Ground as shown below. In this transformer arrangement, phase “B” isper NEC 110.15.“B” Phase120V 120V240V240V208V“C” Phase240VNeutral / Ground“A” PhaseWWW.BIGASSFANS.COM ©2012 DELTA T CORP. DBA BIG ASS FAN CO. ALL RIGHTS RESERVED