Coaxial Cable Power Limitations

CATV coaxial cable can deliver power to equipment that is directly associated with the radio frequency distribution system if voltage is not over _____ volts and if the current supply is from a transformer or other power-limiting device.

a) 60
b) 120
c) 180
d) 270

See answer and applicable Code reference

The correct answer is: a) 60

Article 820 covers coaxial cable distribution of radio frequency signals typically employed in community antenna television (CATV) systems. As noted in the first sentence of Sec. 820.15, "Coaxial cable shall be permitted to deliver power to equipment that is directly associated with the radio frequency distribution system if the voltage is not over 60 volts and if the current is supplied by a transformer or other device that has power-limiting characteristics."

 

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