Can fire protection cable trays be shared with low-voltage cable trays
Segregation of Power and Signal Cables: Power (high-voltage) and signal (low-voltage) cables should be routed separately, using dedicated trays to minimize electromagnetic interference. The commissioning agents for the project have recently told us that this is against code, however in speaking with our fire alarm subcontractor they do not believe that to be the case -. en completely installed, without damage either to conductors or structural system use maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. We will look at how these two systems team up to make sure buildings are safe and stay running well. Power-Limited Fire Alarm (PLFA) circuits, which make up the majority of modern fire alarm systems, are generally permitted by the NEC to share a cable tray or raceway with communications circuits, provided certain conditions are met.
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