Hello to all. looking to replace my # 1n4007 diodes on my voltage regulator. Since diodes are suspose to be twice the highest circut voltage in my case 460v. x 2 is under the 1000v the 1n4007 is rated at. Since the freds have no reverse voltage do I need to get the 1200v.piece or will the 600v. rated one work? Thanks in advance, tom