Question

The insulating material used inside the immersion water heater tube is

Answer 1

The metallic tube of an immersion water heater is insulated, usually by Magnesium Oxide powder.

The tube contains heating elements which is normally made of fine nichrome (NiCr), resistance heating alloy wire. The tube is made of stainless steel alloys or copper.

Immersion water heaters are easy to use and store. They are usually plugged on to an electric socket and the immersion tubes are kept dipped in water. Electricity passing through the immersion tubes heat up the elements within, thereby heating the tube and the water.

Answer 2

The insulating material used inside the immersion water heater tube is $\textbf{magnesium oxide}$

basically heater are of three types present in market , 1. normal plate heater , 2. immersion water heater 3. Geyser

immersion water heater is used for heating the water. in market from 250W to 2kW immersion heaters are available. The body of heater is made of Metallic substance and heating element is made of copper. which is installed inside the capillary tube. The capillary tube is filled with MgO which works as insulator.