In replacing a cable nicked by a plasterers float thro PVC capping I wanted to check current regs re smoke alarms.
AICO & BR docs re smoke alarms levels E & D (mains with battery backup) do not require a local FCU/SFCU for smoke alarms run off a dedicated (3A MCB) final circuit.
Q: Is my reading correct - main switch is acceptable?
The smoke-alarm circuit also supplies a burglar alarm & dialler so they are not on RCD/freezer/ext-lighting circuit.