A gas-filled tube can also be used as a shunt, particularly in a lightning arrestor.
2.
The straps and wiring can be arranged to be a low-cost lightning arrestor with rounded edges to avoid attracting a lightning strike.
3.
Another older form of lightning arrestor employs a simple narrow spark gap, over which an arc will jump when a high voltage is present.
4.
At each backstage insulator, a lightning arrestor in the form of an arc gap is required for the purpose of over-voltage protection in case of lightning strikes.
5.
In telegraphy and telephony, a lightning arrestor is placed where wires enter a structure, preventing damage to electronic instruments within and ensuring the safety of individuals near them.
6.
It also contains a lightning arrestor, fuse and test circuitry which allows the carrier to remotely test whether a wiring fault lies in the customer premises or in the carrier wiring, without requiring a technician at the premises.
7.
Jackie Barry, spokeswoman for Massachusetts Electric, the state's biggest utility with 1.3 million customers, said a failed lightning arrestor in East Bridgewater caused about 21, 000 customers to lose power for 15 to 90 minutes Thursday afternoon, and a downed wire in Chelmsford caused a brief outage for 1, 800 customers.
8.
Jackie Barry, spokeswoman for Massachusetts Electric, the state's biggest utility with 1 . 3 million customers, said a failed lightning arrestor in East Bridgewater caused about 21, 000 customers to lose power for 15 to 90 minutes Thursday afternoon, and a downed wire in Chelmsford caused a brief outage for 1, 800 customers.
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