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What term defines the joining of metallic parts of circuits to establish electrical continuity?
Wiki User
∙ 10y ago
bonding
Wiki User
∙ 10y ago
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What is the difference between armored cable and flexible metallic conduit?
Armored electrical cable contains insulated electrical service wires protected by a flexible steel covering. Metallic Conduit is a tube or pipe though which we lay electrical cable.(Most commonly lighting cables).
Which is the most important device to protect electric circuits from the harm caused by short circuit and overloading?
There are two main devices. One is the circuit breaker. It provides a dual function where in it can detect short circuits with its internal magnetic sensor and overloads with its internal bi metallic strip. The other device is a fuse. It operates by melting a fusible link, that breaks the fault current that is in the circuit, when a high current rush through the fuse.
Another name for thinwall conduit is?
Another name for thin wall conduit is EMT and stands for Electrical Metallic Tubing. The term thin wall is used to differentiate between two conduit systems, thin wall and rigid conduit systems.
At what voltage do you need to use double locknuts on Rigid Metal Conduit?
There are no voltage regulations. A rigid conduit system used two locknuts and one bushing at every connection to a junction box unless the box has a hub. One outside the box and the other locknut inside the box. These are tightened against each other to make the connection secure and to scratch the paint on the outside of the box to make continuity of the metallic system. Continuity of the system is a must as this is the return path for any short circuit that might occur. Rigid connections to fittings require no locknuts as the conduit's threaded end screws into the fitting.
What is used to measure temperature?
Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)
If metallic pipe work has push fit type fittings which do not provide electrical continuity what should be done?
lll
Is paint an insulator of electricity?
Paint will have the ability to block some lower voltages. Painted electrical junction boxes are required to have a conductive ground in electrical metallic systems. This is accomplished by the use of crowned locknuts that scrape through the surface paint when they are tightened onto the connector. These types of systems use the metallic conduit as a grounding medium to carry short circuits in case of an electrical fault.
Which non metallic solid is not an electrical insulator?
graphite
What is Electrical sheathing?
Electrical Sheathing is various forms of metallic or non-metallic covering over conductors. Nonmetallic-Sheathed Cable is what is known by the brand name Romex.
Why is liquid mercury a good electrical conductor?
It is a metallic element
What metallic element is used to make electrical wire and pots?
copper
Can paint carry an electrical current?
Yes, if it is metallic paint it is possible.
What besides neutral system should be bonded to ground?
All metallic components of of any connected electrical equipment. Metallic framed buildings. Metallic well casings. Transmission towers. Antenna towers. Best rule of thumb, if it is built from metal and is used for electrical purposes, ground it.
Three properties of metals that are caused by metallic bonding?
Three properties of metals that are caused by metallic bonding are electrical conductivity, malleability, and ductility.
What is the difference between armored cable and flexible metallic conduit?
Armored electrical cable contains insulated electrical service wires protected by a flexible steel covering. Metallic Conduit is a tube or pipe though which we lay electrical cable.(Most commonly lighting cables).
Is mica nonmetallic?
Mica is non-metallic; it does not carry an electrical charge and is not malleable, or hard.
What are three properties of metal that are a result of metallic bonds?
electrical conductivity, malleability, & ductility.
