Home / News / Industry Notices Grounding Yellow CSST Grounding Yellow CSST Electricians, see current manufacturer's instructions for proper bonding and grounding of yellow CSST: 2011 National Electric Code, NFPA 70 Sec 250.104. See Informational Note #2.See most current adopted code at this link. 2009 National Fuel Gas Code, NFPA 54 Sec. 7.13.2 (This is identical to 2009 IFGC Sec. 310.1.1)See most current adopted code at this link. Direct Bonding of Standard (Yellow) CSST Technical Bulletin Additional information may also be found at CSST Safety. Attachment Posted on Tue, October 4, 2016 by cib filed under electrical safety