How can one plan structures and fortifications in advance to help regaining control over their city walls? Here is an introduction to electrical resistance of tape and wire heating elemets, a calculation of element resistance and a temperature-resistance table. The resistance for any heating element can be calculated if you know the power in Watts (W). The manufacturer will choose a suitable resistance wire to achieve this. The heat proportional to I 2 R loss produced in the heating element is delivered to the charge by one or more of the modes of transfer of heat viz. Most likely the wire is already there as NFC15100 norm makes it mandatory to have it in the kitchen in all new construction. But then I realized that when resistance of the heating element is too low, power drawn will be too high and can cause excessive heating on the element. Resistive heating elements generate heat by the phenomena of joule heating. Some units are wired to plug into a wall socket, â¦ {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/74\/Test-a-Heating-Element-Step-4-Version-2.jpg\/v4-460px-Test-a-Heating-Element-Step-4-Version-2.jpg","bigUrl":"\/images\/thumb\/7\/74\/Test-a-Heating-Element-Step-4-Version-2.jpg\/aid241792-v4-728px-Test-a-Heating-Element-Step-4-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"