Why buy UL certified photovoltaics?

  1. spartanking1978 profile image61
    spartanking1978posted 7 years ago

    Are UL certified systems mandatory for on-grid solar systems?

    1. lime light power profile image59
      lime light powerposted 5 years ago in reply to this

      YES... while the title of my hub may not seem to fit with your question, it does answer it... take a read.
      http://hubpages.com/hub/The-Pros-and-Co … lar-Panels