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This is a 4 in PVC conduit that originates in a 1600A 480/277V 3 phase fused switchgear and feeds a single phase transformer. The transformer feeds a 240/120V 3 phase 800A breaker panel. The 4" PVC contains (3)350MCM conductors. The primary is fused @400A. This was installed in Nov. of '06. Check out the reducer to 3" where it turns into alum flex.

Fred White
Amptech Electric
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