the element on my 15 year old GE oven sparked and broke. I ordered a new one to replace it. Once i turned the breaker back on i tested it and it got hot. However in making this repair i noticed on the back of the oven panel the white cotton-looking material that surrounds the wiring looks to be burnt, about the size of a small fist. I dont know if it was caused by the element or just over time. is this a hazard or normal? not interested in a kitchen fire. thanks.
That white cotton stuff is high temperature insulation protecting the appliance skin from the high temperatures inside the oven. Its surface will at times become colored from the heat from the oven. This is normal. Try to put it back in its original place when you finish the repair. P.