What type of cable is acceptable for conducting power-supply and fire alarm circuits together?

The type of cable that is acceptable for conducting power-supply and fire alarm circuits together is multi-conductor cable, as it is specifically designed to carry multiple signals and power within a single assembly while maintaining proper circuit integrity. Multi-conductor cables typically feature different conductors sheathed together, which can help in minimizing interference and noise from adjacent circuits. When combining power-supply and fire alarm circuits, it is crucial to maintain the integrity of the fire alarm system to ensure life safety measures are effective.

This type of cable configuration allows for compliance with local and national electrical codes, which often specify that low-voltage safety and power supply systems must be separated to prevent any disruption in operation. Additionally, the multi-conductor cable's insulation and design can help prevent cross-talk and electrical interference, thereby providing a reliable solution for ensuring both power and alarm signals function effectively together in an installation.