Thanks guys,I will check it out this week. I have another issue with ac coming into my DC circuit somehow along c19. I need to isolate and determine where,it ends up arching on my in relay then blows fuse 19. Definitely getting familiar with this job,plus it doesn't help when the plant electricians touch it then call us and say its blowing 100amp fuses and 6amp control fuses,who knows what they did then I have to scold them.