J jonny1982 Guest Sep 11, 2014 #1 Why would a transformer tap voltage setting be set to 491 volts if it is being fed from a 480 volt panel? Thanks
Why would a transformer tap voltage setting be set to 491 volts if it is being fed from a 480 volt panel? Thanks
A arcsnsparks98 Senior Member Location Jackson, TN USA Sep 11, 2014 #2 If the phase to phase voltage is running a little hot on the primary, changing the tap to 491 will keep the secondary from being high as well.
If the phase to phase voltage is running a little hot on the primary, changing the tap to 491 will keep the secondary from being high as well.
