Glass and Mica are good insulator for electricity
conductors
Fiberglass.
It could be hay, cotton, paper and animal skins.
http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatcond.html
you just need to pick a material and set up your labbeled diagram.
Electricity insulation is a large group of materials which do not conduct electricity. Those materials are used to protect us from electricity. Rubber, plastics, ceramics are only some of the different types of materials which are good insulators.
Loose fill (usually fiberglass or cellulose) or batt insulation (usually fiberglass) are both good insulations for attics. Batts are better for do it yourselfers, but loose fill is cheaper to install when using a contractor.
There are different types of attic insulations and grades. To find out what you need go to lowes.com or homedepot.com.
You size wire by the current. Various insulations are rated for voltage, temperature and the medium where the wire will be run.
G. D. Plumb has written: 'The sound insulations of metal-framed partitions having structural loadbearing properties'
Many different companies make spray insulation. Dow Styrofoam, Demilec, Icynene, and Certainteed are three very reputable brands of spray foam insulations.
The purpose of bubble insulation to prevent or reduce the transfer of heat escaping from or entering into homes through walls and roofs. It provides an alternative to conventional insulations such as fiberglass, cellulose and spray foams and usually consists of one or two layers of bubble wrap that are laminated between layers of foil that serves as a reflector.