Hi @RekZ
It looks like the wires object has an alpha or z-buffer flag defined in its .ide file.
I don't have GTA on this PC, but if you head over to GTA directory\data\maps\ and locate 'countrye.ide', CTRL F 'CEwirestown08' and at the end of its line it should have a number. The number represents the object's flag, and objects can have multiple flags combined together. You can use this list (see row: Dec) for reference https://gtamods.com/wiki/Item_Definition#GTA_San_Andreas