I had a plumber do some water line rough-in a few years ago. Now I want to connect a sink. Anyway - I'm having a hard time figuring out which is the hot and which is the cold. One has a square cap - the other is bullet shaped. Should I assume the square is the hot? Or the other way around?? I tried testing both lines with the existing H/C water lines with an ohm-meter to see what was connected to what - but it's all grounded at the HW heater - so my result was moot.
ANY HELP HERE?? If someone could let me know - it'd be great. Searching by google is drawing blanks..!
thanks Jonathan