This article was posted 10/10/2008 and is most likely outdated.

Locating Multiple Ground Faults - The Blue Chip Casino
 

 

Topic - Grounding versus Bonding
Subject - Locating Multiple Ground Faults - The Blue Chip Casino in Michigan City, IN

October 10, 2008
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Locating Multiple Ground Faults

The Blue Chip Casino in Michigan City, IN

 

ImageIndiana law states that a casino operation has to take place on a free floating self propelled pleasure craft. A land based operation as in cities like Las Vegas or Atlantic City is prohibited. Boyd gaming had early on discovered that the law can be used to one’s advantage by creating a semi land/water based operation, the so called casino ship. This is however no small undertaking. It requires that a body of water be provided that is capable of supporting a ship with cruiseliner dimensions.

 

Click here to read the summary review from Bender Inc. of the findings and investigative techniques that were used to resolve the grounding problems encountered with this undertaking.
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Comments

  • It appears that all switchboards and panelboards have neutral and ground bars that are all isolated from their respective enclosures. If a phase to enclosure fault were to occur what is the "effective ground-fault current path" [250.4(A)(5)]? Should not the neutral bus in each main switchboard be bonded to its enclosure, and an EGC be installed betweeen the transforme frames and the switchboard enclosures, and individual (non-isolated)EGC's be run to each panelboard and bonded there to the enclosure?

    JKV
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