Ground bond meter test (also called PE resistance test, ground continuity test), is the first test required by the electrical safety testing standards. The ground bond test consists in testing whether the ground points of a device under test are well connected in between each other, and also to the mains ground. 

The measure result of a ground bond test is a resistance value, which has to be lower than the indicated limit from the international standards. Ground bond testers are electrical safety test devices that perform electrical compliance tests.  Ground testing is mandated on all electrical and electronic devices, by a variety of compliance standards bodies, to ensure that persons coming in contact with the devices will not be injured due to shock or electrical discharge.  

The two most common types of ground bond testers are those that test for earth continuity (EC) and ground continuity (GC).