Why would we get harmonics back to a lighting panel for the second time ?
We have a 3 phase 120/208 100 amp panel and notice we have 180 hz on the neutral leg. Can poor connections and overloads to any of the circuits be a cause of this ? The first time harmonics were found one electrician said he replaced the ballast which was the cause at that time and the neutral read 60hz. after the replacements.
Anyone have any other causes for 180hz.
We have a 3 phase 120/208 100 amp panel and notice we have 180 hz on the neutral leg. Can poor connections and overloads to any of the circuits be a cause of this ? The first time harmonics were found one electrician said he replaced the ballast which was the cause at that time and the neutral read 60hz. after the replacements.
Anyone have any other causes for 180hz.