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Tr u O N E ® AT S , I N S TA L L AT I O N A N D O P E R AT I N G I N S T R U C T I O N
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9.2 Phase barriers
Phase barriers must be used to maintain a
clearance of 1 inch on the automatic
transfer switch types.
These are not required with the standard
UL mechanical lug offering, but may be
OXEB_
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Fig. 9.2 Mounting of phase barriers, type OXEB_
required when alternate connections do
not have anti-rotation features, or when
alternate connections reduce over-air
clearance between phase conductors to
less than 1 inch.
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