On 14/06/15 13:02, John Mulrooney wrote:
Hello,


I'm starting to install some interlinked smoke and heat alarms. Can they
use L & N from different circuits, or sgould they have a seperate dedicated
one.

John M


The must be on the same circuit and generally are put on a lighting
circuit (ground floor preferred) so that circuit trip is immediately
apparent (evening/night at least).