[garciapu]

I remember reading in the code that it is required to use a tapped Screw or a nut and bolt as a means to connect a bond to a metal building or beam. I have a situation where someone has used a Self tapping screw (tek-screw) to fasten a bonding jummper to from one metal structure to another.. what is the Code that says this isn't allowed. Thank you for your time.

[tkrussell]

At the beginning of Article 250 is the following, see #5:

250.8 Connection of Grounding and Bonding Equipment.

(A) Permitted Methods. Grounding conductors and bonding jumpers shall be connected by one of the following means:
(1) Listed pressure connectors
(2) Terminal bars
(3) Pressure connectors listed as grounding and bonding equipment
(4) Exothermic welding process
(5) Machine screw-type fasteners that engage not less than two threads or are secured with a nut.
(6) Thread-forming machine screws that engage not less than two threads in the enclosure.
(7) Connections that are part of a listed assembly
(8) Other listed means