Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Nickel-Chromium Heater Wire - Temperature Rise vs. Amps

Electric resistance vs. temperature rise for Nickel-Chromium electrical heater wire.

Sponsored Links

Nickel-Chromium electric resistance wires:

Nickel-Chromium Heater Wire - Temperature Rise vs. Amps
SWG	Diameter		Nickel–chromium
	(mm)	(in)	(ohm/m)	Current (A) to maintain temperature rise
	(mm)	(in)	(ohm/m)	500 °C	1000 °C
12	2.642	0.104	0.197	38	78
14	2.032	0.080	0.333	26	53
16	1.626	0.064	0.520	19	40
18	1.219	0.048	0.92	13	27
20	0.914	0.036	1.65	8.5	18
22	0.711	0.028	2.72	6.3	13
24	0.559	0.022	4.40	4.5	9.5
26	0.457	0.018	6.60	3.5	7.0
28	0.376	0.0148	9.7	2.7	5.5
30	0.315	0.0124	13.9	2.2	4.5
32	0.274	0.0108	18.3	1.9	3.5
34	0.234	0.0092	25.2	1.6	3.0
36	0.193	0.0076	37.0	1.3	2.3
38	0.152	0.0060	59.0	1.0	1.7
40	0.122	0.0048	92	0.8	1.4
42	0.102	0.0040	133	0.65	1.1
44	0.0813	0.0032	208
46	0.0610	0.0024	370
48	0.0406	0.0016	835
50	0.0254	0.0010	2130

SWG - Imperial Standard Wire Gauge for sheet metal and wire

Example - Electric heater

Calculate the length of a nickel-chromium gauge 18 wire in an electric heater with power 2000 W, 230 V supply and max. wire temperature 500^oC.

The current required to produce 2000 W can be calculated with Ohm's law as

P = U I

I = P / U

= (2000 W) / (230V)

= 8.7 A

The max. current in the 18 gauge wire with max. temperature 500^oC is 13 A and the heat can be produced in a single wire.

The total resistance in the heating wire can with Ohm's law be calculated as

R = U / I

= (230 V) / (8.7 A)

= 26.4 ohm

Since the resistance of the wire is 0.92 ohm/m the length of the wire can be calculated as

l = (26.4 ohm) / (0.92 ohm/m)

= 28.7 m

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

the Engineering ToolBox Privacy Policy

Advertise in the ToolBox

If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.

Citation

This page can be cited as

The Engineering ToolBox (2014). Nickel-Chromium Heater Wire - Temperature Rise vs. Amps. [online] Available at: https://www.engineeringtoolbox.com/electric-resistance-wires-d_1890.html [Accessed Day Month Year].

Modify the access date according your visit.