If you can see inside your power meter and it's of the older style with five mechanical dials, you will see that the five dials are connected to one another through a gear train like this, with the gears having a ratio of 10:1. small gear and a larger gear are connected together, one on top of the other. Gear trains often consist of multiple gears in the train, as shown in the next two figures. In the case above, the purple gear turns at a rate twice that of the blue gear.
2 feet & lt ; < b > NOT exactly < / b > < br / > Depends on the codes and type of  drain  & nbsp ; For example a trap can be located 2 feet from a vented line and the fixture located 2 feet from the trap & nbsp ; A floor drain in some codes can be located up to 15 Feet from a vent , then you have indirect drain lines such as an ice maker or ...
Drain Hole Size. The size of the drain hole depends on the size of your shower's drain opening. Most shower drains utilize a 2-inch pipe. This means the hole you cut into the subfloor should be slightly larger than 2 inches in diameter.However, your shower's drain body may require you to drill a larger hole in the subfloor.Check the manufacturer's instructions for the diameter of the drain body and cut the hole to the appropriate size.ther Considerations. It's often a good idea to first cut the hole in the subfloor and then connect the drain without cementing it into place. Once you do this you can place the shower base into place to test if you've cut the hole in the right place.