Super easy amateur question...
I had rough plumbing run for a basement bathroom I'm putting in and I finally got around to attempting to install the faucet for the new sink. To tap into the supply lines I had to cut the capped copper pipes coming out of the wall to install the local shutoff valves for the faucet. The bathroom itself has shutoff valves for both the hot and cold supply lines as they come into the room so I shut off the hot water valve and proceeded to cut the capped copper pipe on the hot supply line under the sink... which resulted torrents of water rushing out I ended up having to shut off the cold water supply line as it came into the bathroom to stop the flow.
After a little investigation, it seems that the cold water line is supplying water to *both* the hot and cold supply lines under the sink.
So my question, is that right? Should the cold water line also feed the hot supply to the sink? Was I wrong in expecting that shutting off just the hot water supply to the entire bathroom would shut off supply to the hot water line under the sink? Or did the plumber mix something up?
I had rough plumbing run for a basement bathroom I'm putting in and I finally got around to attempting to install the faucet for the new sink. To tap into the supply lines I had to cut the capped copper pipes coming out of the wall to install the local shutoff valves for the faucet. The bathroom itself has shutoff valves for both the hot and cold supply lines as they come into the room so I shut off the hot water valve and proceeded to cut the capped copper pipe on the hot supply line under the sink... which resulted torrents of water rushing out I ended up having to shut off the cold water supply line as it came into the bathroom to stop the flow.
After a little investigation, it seems that the cold water line is supplying water to *both* the hot and cold supply lines under the sink.
So my question, is that right? Should the cold water line also feed the hot supply to the sink? Was I wrong in expecting that shutting off just the hot water supply to the entire bathroom would shut off supply to the hot water line under the sink? Or did the plumber mix something up?