Nichrome Wire Calculator

Nichrome is an alloy of Nickel and Chromium. It has high corrosion resistant and melting point hence it is used in electric appliances and tools. Type A and Type C are the common types of NiCr coils. Nichrome is wound in coils to a certain electrical resistance, and current is passed through it to produce heat. Use this online nichrome wire calculator to calculate resistance, power, current and voltage of the Nichrome coil by just providing the length, thickness and temperature of the NiCr.

Inch
gage
Ohms
Ohms
Watts
Amps
V

Nichrome is an alloy of Nickel and Chromium. It has high corrosion resistant and melting point hence it is used in electric appliances and tools. Type A and Type C are the common types of NiCr coils. Nichrome is wound in coils to a certain electrical resistance, and current is passed through it to produce heat. Use this online nichrome wire calculator to calculate resistance, power, current and voltage of the Nichrome coil by just providing the length, thickness and temperature of the NiCr.

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Formula:

RN = (Wire Length (inch) / 12) x RPF Vp = I x RN Power = I x Vp Where, RPF = Resistance per Feet (Ohms) [From Table] I = Current Required (Amps) [From Table] Vp = Volts

Example:

A 30 inch nichrome C wire length with gauge as 12 and temperature as 450 degree fahrenheit.

Solution:

For wire gauge of 12, RPM value is 0.09907 (from Table).
RN = (Wire Length (inch) / 12) x RPF
= (30 / 12) x 0.09907
= 0.2477 Ohms
Vp = I x RN
= 12.725 (from Table) x 0.2477
= 3.2735 V
Power = I x Vp
= 12.725 x 3.2735
= 41.6554 Amps

Nichrome wire can be used as an alternative for platinum wire in flame testing. In NiCrC, additionally Iron (Fe) is added along with Nickel and Chromium.


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