Contrary to water piping, If your conduit is always to be watertight, The theory is to maintain water out, not in. In cases like this, gaskets are employed with special fittings, such as the weatherhead leading from the overhead electrical mains to the electric meter. The Roxtec BG™ B and https://minitrunking24567.jaiblogs.com/56247856/cable-management-an-overview