Editing Heating element (section)

=== Resistance heater ===

==== Wire ====
{{Main article|Resistance wire}}
[[File:Toaster-quartz element.JPG|thumb|''A coiled heating element from an electric [[toaster]]'']]''Resistance wire''s are very long and slender resistors that have a circular cross-section. Like [[Wire|conductive wire]], the diameter of resistance wire is often measured with a gauge system, such as [[American wire gauge|American Wire Gauge (AWG)]].<ref>{{Cite web |title=Resistance Wire Overview |url=https://temcoindustrial.com/product-guides/wire-cable-and-accessories/resistance-and-non-resistance-wire/resistance-wire-overview |access-date=2024-01-08 |website=temcoindustrial.com}}</ref>

==== Ribbon ====
''Resistance ribbon'' heating elements are made by flattening round resistance wire, giving them a rectangular cross-section with rounded corners.<ref name=":1" />{{Rp|page=54}} Generally ribbon widths are between 0.3 and 4&nbsp;mm. If a ribbon is wider than that, it is cut out from a broader strip and may instead be called resistance ''strip''. Compared to wire, ribbon can be bent with a tighter radius and can produce heat faster and at a lower cost due to its higher surface area to volume ratio. On the other hand, ribbon life is often shorter than wire life and the price per unit mass of ribbon is generally higher.<ref name=":1" />{{Rp|page=55}} In many applications, resistance ribbon is wound around a mica card or on one of its sides.<ref name=":1" />{{Rp|page=57}}

==== Coil ====
''Resistance coil'' is a resistance wire that has a coiled shape.<ref name=":1" />{{Rp|page=100}} Coils are wound very tightly and then relax to up to 10 times their original length in use. Coils are classified by their diameter and the pitch, or number of coils per unit length.