I own a gas station that was remodeled about 20 years ago. When it was wired up, in the specs for the dispenser wiring it was required for the power to the dispensers and the dispenser lights to have single pole breakers that break the hot and the neutral. Does any experienced electrician here know why the dispenser company (Dresser Wayne) wants both the hot and neutral disconnected when you shut off the breakers ???? I always wondered what their reasoning was. The underground submersible pumps use plain old 2 pole breakers--nothing special like the dispensers. ======================================================== Remove the ZZZ from my E-mail address to send me E-mail.
QUESTION FOR AN ELECTRICIAN
Dec 01, 2011
7 Replies
I'm not an electrician nor do I even play one on tv but...
maybe it's because if you lost the neutral connection to the power company transformer you could see significant voltage on the neutral at the pump?
It's an Nec requirement for fuel dispensing equipment. At a location remote from the dispenser, a disconnecting means must be provided that disconnect "all" circuit conductors. The codebook footnote mentions that this is to guard against any accidental polarity reversal issues where
120 volt equipment is used
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RBM:
Have anyone ever told you that you da man? ;-)
RBM's depth of electrical knowledge is shocking. ^_^
TDD
=========================================================== What is the proper name for this type of breaker ??? ======================================================== Remove the ZZZ from my E-mail address to send me E-mail.
Ralph
Sorry, I couldn't resist. "Switched neutral circuit breaker" Here is a link to a QO type switched neutral breaker:
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