Can anyone help? In our plant facility there is mostly emt conduit. In some instances the electrical conduit is strapped to water pipes to support the conduit. In other cases it is strapped to air lines. I don't believe this is right. Should the water line or air line be removed the conduit would be unsupported. Also, now the company has taken to hanging machine numbers and department signs to the emt conduit. Is that right? The issue there is that if the sign ways to much it could damage the conduit and crush the wires or pull the conduit from the fittings and conductors. Where can I find answers to prove this in the NEC?