Hmm, let me explain a bit more.
The shower is already in and working. It has an isolation device (cooker switch) located in a cupboard on the back of the wall that the shower is mounted on. Trouble is the water pressure drops occasionally causing the shower to thermal. This involves the person wrapping themselves in a towel and walking around to the cupboard, switching the isolator off and back on. Then they go back to the shower to continue. This is not ideal.
I've been tasked with fitting an isolator within the DDA/shower room, and just wondered if there are any specific dimensions for locating the pull cord. I can't find any myself, so thought I'd ask.
Two 10mm cables into a pull cord? Child's play.