May I ask, which value indicated on the cable’s outer coating corresponds to the rated voltage of 500V in this standard?
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“AQ 3009-2007 Code for Electrical Safety and Explosion Protection in Hazardous Areas 6.1.1.1.2 The low-voltage cables or insulated wires selected must have a rated voltage higher than the operating voltage of the circuit, and it must not be lower than 500V; the insulated wires must be installed within conduits. ”----In this standard, the rated voltage of 500V – which value is indicated on the cable’s outer insulation? For example, the voltage in a cable is marked as 300/500V.
It should be the voltage between lines, that is, 500