Electrical insulator - Revision history

Jmdonev: 1 revision imported

2018-05-11T18:17:06Z

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Jmdonev at 21:21, 9 May 2018

2018-05-09T21:21:06Z

← Older revision		Revision as of 21:21, 9 May 2018
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	[[Category:Done ~~2015~~-02-15]]		[[Category:Done 2018-04-30]]
	[[File:Copper wire.jpg\|framed\|right\|Figure 1. An example of differing sizes of insulated copper wire. It is important for electricians to pay attention to the coloring: red wires typically denote "positive" flow, black "negative," and green or yellow/green denote the protective earth/ground wires<ref>internet: http://www.world-trades.com/pro/490/508-1/pvc-insulated-flexible-wirebuilding-wire-93167.html</ref>]]		[[File:Copper wire.jpg\|framed\|right\|Figure 1. An example of differing sizes of insulated copper wire. It is important for electricians to pay attention to the coloring: red wires typically denote "positive" flow, black "negative," and green or yellow/green denote the protective earth/ground wires<ref>internet: http://www.world-trades.com/pro/490/508-1/pvc-insulated-flexible-wirebuilding-wire-93167.html</ref>]]

	<onlyinclude>'''Electrical insulators''' are materials with a high [[resistivity]] (resistivity is a property of the material) so they can make objects with a high [[resistance]]. This allows insulators to prevent ~~electrical~~ [[current]] from flowing where it's not wanted. </onlyinclude>		<onlyinclude>'''Electrical insulators''' are materials with a high [[resistivity]] (resistivity is a property of the material) so they can make objects with a high [[resistance]]. This allows insulators to prevent [[electric current]] from flowing where it's not wanted. </onlyinclude>

	Insulators are useful for coating [[wire]]s, or acting as [[dielectric]]s in [[capacitor]]s. An insulator (such as plastic, rubber, or glass) can have 10<sup>20</sup>x the resistivity of a [[metal]] like [[copper]]. Often times these insulators are colour-coded to make it easy to tell what function the wire inside is serving, see figure 1 for an example.		Insulators are useful for coating [[wire]]s, or acting as [[dielectric]]s in [[capacitor]]s. An insulator (such as plastic, rubber, or glass) can have 10<sup>20</sup>x the resistivity of a [[metal]] like [[copper]]. Often times these insulators are colour-coded to make it easy to tell what function the wire inside is serving, see figure 1 for an example.
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	To learn more about the physics of insulators please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c2 hyperphysics].		To learn more about the physics of insulators please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c2 hyperphysics].

			== For Further Reading ==
			For further information please see the related pages below:
			*[[Electric current]]
			*[[Dielectric]]
			*[[Conductor]]
			*[[Superconductor]]
			* Or explore a [[Special:Random\| random page!]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:31:02Z

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J.williams at 16:53, 12 August 2015

2015-08-12T16:53:12Z

New page

[[Category:Done 2015-02-15]]
[[File:Copper wire.jpg|framed|right|Figure 1. An example of differing sizes of insulated copper wire. It is important for electricians to pay attention to the coloring: red wires typically denote "positive" flow, black "negative," and green or yellow/green denote the protective earth/ground wires<ref>internet: http://www.world-trades.com/pro/490/508-1/pvc-insulated-flexible-wirebuilding-wire-93167.html</ref>]]

<onlyinclude>'''Electrical insulators''' are materials with a high [[resistivity]] (resistivity is a property of the material) so they can make objects with a high [[resistance]]. This allows insulators to prevent electrical [[current]] from flowing where it's not wanted. </onlyinclude>

Insulators are useful for coating [[wire]]s, or acting as [[dielectric]]s in [[capacitor]]s. An insulator (such as plastic, rubber, or glass) can have 10<sup>20</sup>x the resistivity of a [[metal]] like [[copper]]. Often times these insulators are colour-coded to make it easy to tell what function the wire inside is serving, see figure 1 for an example.

Air (like in the [[atmosphere]]) is actually an excellent electrical insulator. This means that electricity can be sent through a conductor and it won't jump through the air. Air does have an upper limit to the voltage it can handle, which is called the average breakdown voltage (to learn more about average breakdown voltage, please see [http://www.allaboutcircuits.com/vol_1/chpt_12/8.html all about circuits]. This breakdown voltage is related to [http://www.nssl.noaa.gov/education/svrwx101/lightning/ lightning].

To learn more about the physics of insulators please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c2 hyperphysics].
==References==
{{reflist}}
[[Category:Uploaded]]