The tap must be positioned where it is going to prove most useful. It should be sited over a gully, drain, pathway or at least on top of very hard ground. If sited above grass or soil, it is very likely that muddy patches will appear when there is some spillage which is often inevitable.
It is useful to fit an automatic hose reel next to the siting of the tap, which can be easily connected for convenience. A hose can be attached for use with a lawn sprinkler, for washing the car or for use with building work.
It is sensible to keep the run of outside pipe as short as possible and to provide a means of shutting off the water and draining the system during cold winter months. When the siting is decided and you have chosen a suitable connection point to the rising main, you are ready to begin the fitting.