Hello everyone,
I have a customer that states they had a "electrician" do some work for them and soon after they had main breaker problems. I took a look and whenever I reset one of 2 different breakers it trips the main breaker of the panel otherwise the panel works fine. I left these breakers off and need to return this weekend to try and troubleshoot. Does anyone have any idea what would cause a main to trip when turning on a 20A circuit?? The only thing I could think of was possibly the electrician tied L1 and L2 together in a J-box somewhere causing it to bond the busbar together???? I don't believe a dead short on a 20A circuit would be enough to throw a 100A main but have seen it on higher amperage circuits. Any help on this would be much appreciated!
I have a customer that states they had a "electrician" do some work for them and soon after they had main breaker problems. I took a look and whenever I reset one of 2 different breakers it trips the main breaker of the panel otherwise the panel works fine. I left these breakers off and need to return this weekend to try and troubleshoot. Does anyone have any idea what would cause a main to trip when turning on a 20A circuit?? The only thing I could think of was possibly the electrician tied L1 and L2 together in a J-box somewhere causing it to bond the busbar together???? I don't believe a dead short on a 20A circuit would be enough to throw a 100A main but have seen it on higher amperage circuits. Any help on this would be much appreciated!