UL 467:2017 pdf download.Grounding and Bonding Equipment.
6.8 Water-meter shunts
A water-meter shunt shall consist of two clamps connected by means of a 4 AWG (21.2 mm2) or largersolid copper wire. The clamps shall comply with the requirements for clamps given in this Standard.
6.9 Armored grounding wire
6.9.1 General
Armored grounding wire shall consist of a single corrosion-resistant copper，aluminum, or copper-cladaluminum conductor，within a flexible,helically formed steel armor similar in general design to thatemployed in armored cable.
6.9.2 Conductor
The conductor shall be sized in accordance with Table 4 and shall comply with the short-time currentrequirement in Clause 9.5.The conductor is not required to be tinned.
6.9.3 Armor
6.9.3.1 Splices made in the steel strip forming the armor shall not increase the thickness or diameter ofthe armor or lessen its mechanical strength.
6.9.3.2 The strip used in the armor shall not be less than 0.64 mm (0.025 in) thick.
6.9.3.3 In an armored grounding wire employing an uninsulated (bare) conductor，the weight ofsingle-strip steel armor shall not be less than 'specified in Table 4.
6.9.3.4 The steel armor of an armored grounding wire shall comply with the requirements for zinc coating,be able to support a tension of 667 N (150 lbf), and have the flexibility applicable to armored cable.
