16. Which of the following is an example of a cellulosic electrode?
a. E6013 b. E6011 c. E7018 d. E6012

17. What is the prescribed safe lens shade if the electrode size is 5/16 - 3/8 and amperage is 400+ amperes?
a. # 8
b. # 10
c. # 12
d. # 14​