Where should an indicating test gauge be connected during a test?

An indicating test gauge should be connected to the boiler or pressure vessel during a test to ensure accurate readings of the system's pressure or temperature. This connection allows the gauge to directly measure the operational parameters of the equipment being tested, providing reliable data necessary for evaluating the efficiency and safety of the system.

Testing the gauge in this manner helps to confirm that the boiler or pressure vessel is functioning within its specified limits and allows for immediate observation of any pressure fluctuations or abnormalities during the testing process. This direct integration with the system is critical for compliance with mechanical codes that mandate safety and performance evaluations of such equipment.