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509.6.1.1 Water Heaters, Insulation Shield
Where a vent passes through an insulated assembly, an approved metal shield shall be installed between the vent and insulation. The shield shall ...
G2426.4 Fuel Gas, (502.4) Insulation Shield
Where vents pass through insulated assemblies, an insulation shield constructed of steel having a minimum thickness of 0.0187 inch (0.4712 mm) (No ...
311.44 Wiring Methods and Materials, Shielding
be shielded. All metallic insulation shields shall be connected to a grounding electrode conductor, a grounding busbar, an equipment grounding conductor ...
(B) Wiring Methods and Materials, Shields
All top and bottom shields shall be of designs and materials identified for their use. Top shields shall be metal. Both metallic and nonmetallic ...