Here is the original item:
My appliances are always hungry.
(A) For example,
the dryer will eat underwear,
(B) and the
microwave will suck off half a frozen
dinner (C)
while it is cooking.
You wanted to do this:
My appliances are always hungry,
for example, the dryer will eat underwear,
and the microwave will suck off half a frozen dinner while it is cooking.
Putting a comma after hungry will cause a comma splice, an error that occurs when you have run together too much information. Reconsider your options.
You might want to review the rules.