dennis@home wrote:


"ARWadsworth" wrote in message
...
I am (or rather a customer is) after something like this

http://www.maplin.co.uk/13a-wall-soc...-in-usb-340875

but with a double socket.

Or a stand alone hard wired USB mains powered USB point will do.

Suggestions welcome if you have used one.


Don't fit one, you cant turn them off so they waste power all the time.

De-rate the cable depending on how well the socket and back box is
insulated and how much power the PSU uses both when idle and in use.
They do provide the technical data required to check this?

I'll agree don't fit a combined socket, but only because when the USB
power supply fails, it means you need to take the 13A socket out, with
all the faffing about rewiring. Add an extra 13A socket, and plug one of
these in:-

http://www.maplin.co.uk/4-port-usb-t...adaptor-383894

As for the power used, the absolute maximum a compliant USB socket can
put out is 5W, and assuming a reasonably efficient SMPS in the box, that
will generate under 10 watts of heat, possibly much less.

--
Tciao for Now!

John.