On Jul 15, 3:08*pm, "Ca****cher" wrote:
Installation of a gas range requires running a new gas line from the
basement utility room to the kitchen, a total of about ten feet. *The
installation instructions indicate either a 1/2 or 3/4-inch line can be
used. *The easiest approach would be to tee black pipe into an existing
1/2-inch gas line feeding a 40 gal/40,000 BTU gas water heater. *Will the
1/2-inch line now feeding the water heater have enough capacity to support
both the water heater and a gas range? *The combined BTU of all the range
burners is about 60,000 BTU. *Opinions?

To be on the safe side I would up it to 3/4 to the T where the range
comes off. Just a swag though.