I am working on wiring my basement and I am adding an outlet to a stud that is green treated. When I attach the wire to the stud with a cable staple, is using one that is zinc coated enough, or does it have to be galvanized like nails need to be?
Pressure treated wood now requires special coated nails (or cable staples). Depending on the exact type of pressure coating, different types of nails are acceptable. It's best to just use stainless steel and be safe...a few won't break the bank. I've heard of a house being torn down because they used uncoated nails and joist hangers.
Standard staples listed for NM cable like this are fine. Interior nails many times are glued sinkers not always galvanized because they are not exposed to the weather.