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Reply To: Why -48V is used as power for telecom?

#37762
Vijay
Guest

Ahmad, dont go mad on it, 🙂 actually there was no technical reason behind it. Bell first used 48 v bcoz they used 4 batteries of 12 volts , that time only 12 volts batteries were common so they used it. Now every body following them thats all.

Regards