Is it okay to put two OC-250, or OC-100HGs in parallel? by kaci@dmiagency.com | Jul 5, 2018 | 0 comments Yes, two OC-250, or two OC100HG, can be connected in parallel. Submit a Comment Cancel replyYour email address will not be published.Comment Name Email Website Please enter an answer in digits:one × 3 =