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alf
 Post subject: Modeling for a Fused Disconnect
PostPosted: Thu Dec 05, 2013 12:16 am 
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Is there a recommended gap for 600VAC fused disconnects (safety switches)? ETAP uses 25 for a panel board an 32 for a switchboard.
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wbd
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PostPosted: Thu Dec 05, 2013 5:44 am 
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I know that EasyPower uses 32mm for a switch.

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alf
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PostPosted: Thu Dec 05, 2013 7:11 am 
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wbd wrote:
I know that EasyPower uses 32mm for a switch.


WBD,

Does Easy Power default to a 24" working distance for this?
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arcad
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PostPosted: Thu Dec 05, 2013 7:40 am 
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Quote:
Is there a recommended gap for 600VAC fused disconnects (safety switches)? ETAP uses 25 for a panel board an 32 for a switchboard.


Please check http://www.arcadvisor.com/arcflash/ieee1584.html#Equipment for typical conductor gaps. Please note these are typical but not 'recommended' gaps. I would use actual gap for the analysis.

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wbd
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PostPosted: Fri Dec 06, 2013 6:34 am 
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You can set the working distance to what you want but the default is still 18" for 600V and less. This would consistent with working on these circuits with the proper PPE

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alf
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PostPosted: Wed Dec 11, 2013 3:09 am 
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Does someone have a copy of UL 98 and could look up the bus spacing?
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