just reading the manufacters instructions for a burg/fire alarm panel I used to install. It says" Connect the control panel earth ground screw through a #16 AWG or larger wire to a cold metal water pipe or a buried ground rod. DO NOT use a gas pipe, plastic pipe, or AC Ground connections. This panel is fed with a 16.5 VAC transformer.It also says that this equipment should be installed in accordance with NFPA -72 national fire alarm code. Is there a difference in grounding requirements because it is considered under different jurisdiction?
