The purpose of purging the lines with nitrogen during brazing is ...

[misspop]

The purpose of purging the lines with nitrogen during brazing is to:
 
  A) Pressurize the lines for leak testing.
  B) Increase the temperature of the torch flame and decrease brazing time.
  C) Reduce the amount of refrigerant that must be added once the installation is completed.
  D) Prevent the formation of copper oxide inside the lines.

Question 2

The National Electric Code and the National Fuel Gas Code are written by:
 
  A) The International Code Council - ICC.
  B) The National Fire Protection Association - NFPA.
  C) The Underwriters Laboratories - UL.
  D) Canadian Standards Association - CSA.

[momo1250]

Answer to Question 1

D

Answer to Question 2

B

[misspop]

YES! Correct, THANKS for helping me on my review

[covalentbond]

Thanks for the timely response, appreciate it