- Reaction score
- 2
Query about what's required for cables in domestic setting carrying 12V; context is MVR System by Lunos.
This has transformer that's installed in consumer unit; output is 12V max 4.5A max 54W
This is run to switches from which the multicore J-Y(St)Y 4x2x0.8 powers small ventilation fans embedded across walls.
Query_1 is about protection required for the cables from consumer unit to switch, and onwards to fans. These cables will be within floor void and the drywalling dot-and-dab space. Since there are unprotected 240V cables in these spaces I'm assuming that's fine also for the 12V cables. Is that right? Is that sensible? For some rooms the cable could be chased into blockwork before styling goes on. Would that be 'better', or pointless?
Query_2 is about how to exit that 12V cabling through the plasterboard. This probably a first fix question - cable runs are terminated in backbboxes. Standard backbboxes are bigger than the 4cm Square area available; given so small an area how would forum suggest exiting the cable
This has transformer that's installed in consumer unit; output is 12V max 4.5A max 54W
This is run to switches from which the multicore J-Y(St)Y 4x2x0.8 powers small ventilation fans embedded across walls.
Query_1 is about protection required for the cables from consumer unit to switch, and onwards to fans. These cables will be within floor void and the drywalling dot-and-dab space. Since there are unprotected 240V cables in these spaces I'm assuming that's fine also for the 12V cables. Is that right? Is that sensible? For some rooms the cable could be chased into blockwork before styling goes on. Would that be 'better', or pointless?
Query_2 is about how to exit that 12V cabling through the plasterboard. This probably a first fix question - cable runs are terminated in backbboxes. Standard backbboxes are bigger than the 4cm Square area available; given so small an area how would forum suggest exiting the cable
