"""Did you fit this directly after the mains inlet in the house or did you fit it to the outside tap ?"""
Hello Cliff,
Our pump is in the garage and we just placed the pump between the pipe after the water meter and the outside tap. The pump turns itself on when you fill up the vans automatically. When the vans are full it turns itself off automatically.
If you do this with any type of pump other than the salamander boost or any other similar new product the water board will have your nuts off for it.
You are not allowed to connect any old boost pump to the mains without using a stored water break tank filled by a ball valve or similar for non return/ cross contamination purposes.
The best way to get around it would be to use a double check valve outside tap a d connect it to that with a flexible hose and connector. This way it would be viewed as similar to a pressure washer although it would still struggle to work without enough water flow in your case Cliff.