On new homes I have seen Romex run thru same holes the plumbers use for their Pex tubing (Red & Blue Plastic). Is this a common thing to do? Sometimes the plumbers drill 2" or 3" holes thru these laminated I beams, there is plenty of space around the pipes for Romex to go thru, but is it wise? I always drill separate holes for my Romex or use the prepunched holes. Just wondering!