Acceptable Voltage Range 120 - Web voltage point of measurement: Web to further this objective, this standard establishes, for each nominal system voltage, two ranges for service voltage. Fyi, standard us mains voltage is 120 volts, not 110. Web tuesday, june 19, 2018. The nominal voltage in the united states is 120 volts, but the national electrical code [nec 210.19 (a)]. Web to further this objective, this standard establishes, for each nominal system voltage, two ranges for service. Standard voltages 120 208 240 277 480 600 660: Percent of nominal voltage : If you look from 110, you'll see a lot more variation.
Standard voltages 120 208 240 277 480 600 660: Web to further this objective, this standard establishes, for each nominal system voltage, two ranges for service. Web tuesday, june 19, 2018. Fyi, standard us mains voltage is 120 volts, not 110. Web voltage point of measurement: Percent of nominal voltage : The nominal voltage in the united states is 120 volts, but the national electrical code [nec 210.19 (a)]. If you look from 110, you'll see a lot more variation. Web to further this objective, this standard establishes, for each nominal system voltage, two ranges for service voltage.