- Licensed Electrician, Addiss Electric is an electrical contracting company based in Centereach, NY and has been serving Residential and Commercial customers in Suffolk County, Long Island, NY. for over 10 years. Licensed and insured, it is owned and operated by William Addiss, a Suffolk County Master Electrician. He is a member of SCECA, ( Suffolk County Electrical Contractors Associ ...www.licensedelectrician.com