Examples of INCUMBENT. 1  Voters will have the chance to see the incumbent and her opponent in a series of three debates. 2  Incumbents often have an advantage in elections. It is incumbent upon the press to act not in its own best interests, but in society's best interests. â 2 Carll Tucker, Saturday Review, 23 June 1979. â¦ 3  the various types of obligation incumbent on the members of the profession.
Centrifugal type spark arrestor. A spark arrestor is any device which prevents the emission of flammable debris from combustion sources, such as internal combustion engines, fireplaces, and wood burning stoves. Spark arrestors play a critical role in the prevention of wildland fire and ignition of explosive atmospheres.
A lightning arrester is a device used on electrical power systems and telecommunications systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal.When a lightning surge (or switching surge, which is very similar) travels along the power line to the arrester, the current from the surge is diverted through the arrestor, in most cases to earth. lightning arrester may be a spark gap or may have a block of a semiconducting material such as silicon carbide or zinc oxide. Thyrite was once a trade name for the silicon carbide used in arresters.