Thanks for all your replies.
We've gone ahead with it using copper.

"Philip Wagstaff" wrote in message
...
We're having a power shower installed; ie shower with a pump 1.5
atmospheres I think. We want copper pipes. The plumber urges us to use
white plastic (I do not know what type) pipes because he says it reduces
the number of connections which, he says, will inevitably leak Does he
have a point?
We'd appreciate knowledgeable comments/advice.