I'm currently working on a job installing conduit for a cell tower on the top of a 12 story building in central New Jersey. For whatever the reason, some other contractor ordered most of the material on the job for us and I had a few questions about what we had to work with.
My main question is this, is it permissible to use threaded aluminim couplings to attach a piece of 2" aluminum conduit to a factory made 2" galvanized sweep?
Also, is this wiring method ok as far as considering this pipe run as the EGC when 2-types of metals are being used in the run?
