Petroleum emergency stop disconnect

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hhsting

Senior Member
Location
Glen bunie, md, us
Occupation
Junior plan reviewer
I just had precon meeting with inspector and in it drawings said to install fuel panel F for petroleum gas station islands.

Panel F feeds dispensers, pumps, signs and E stop buttons 120V. The inspector then questioned why is Panel F feeder breaker feeding petroleum emergency stop buttons?

I have no clue. The drawings showed Panel F feeding E stops that is required by NEC 2014 Article 514.11. Seems like their has to be something in between not just direct connection from120Vac fdr breaker to E stop buttons said the inspector.

Again I have no clue what he meant.

Following questions:

1. How is E stop normally wired?

2. Does anyone know or have any single lines or manufacturer recommended way as to why have Panel F feeder breaker feed E stop buttons?

Thanks
 
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