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In a controls cabinet that we are retrofitting with new equipment, all switches and signals are 24VDC or less EXCEPT for an Estop running 120VAC. This triggers a severe headache for troubleshooting due to the company's arc flash policy that requires the "hazmat" suit to even open the panel to check if an output is firing correctly. Therein lies the question.
Is it against any code to run 24VDC through the Estop to a relay in an remote cabinet that interrupts the 120VAC? Does it have to be a certain type or a certified relay of some sort? I already have this in mind: N/C Estop contact (pulled out) fires remote relay that closes N/O contacts to make 120VAC connection.
Is it against any code to run 24VDC through the Estop to a relay in an remote cabinet that interrupts the 120VAC? Does it have to be a certain type or a certified relay of some sort? I already have this in mind: N/C Estop contact (pulled out) fires remote relay that closes N/O contacts to make 120VAC connection.