The fault interrupter will be used to isolate a 115 kV, 20 MVA substation transformer from line during a faulted condition without interrupting the operation of other sourceside equipment in the substation. The fault interrupter will also be used for no-load and/or full load switching of the power transformer on the 115 kV system. Boviet: Standard Series 2010 circuit switcher The fault interrupter shall be an S & C Model 2010 Circuit Switcher, Catalog Number 197838-A-E12-H2-K-M-T-T2-V-W1-Y with (8) Anchor Bolts S-81365- 1. Northside: Standard Series 2010 circuit switcher The fault interrupter shall be an S & C Model 2010 Circuit Switcher, Catalog Number 197738-A-E14-H2-K-M-T-T2-V-W1-Y with (8) Anchor Bolts S-81365- 1. The fault interrupter shall be 115 kV nominal, 550 kV BIL, and have a minimum rating of 1200 amperes continuous and 50,000 amperes momentary (.25 seconds) current rating. The fault interrupting rating shall be a minimum of 20,000 amperes and shall have a 40,000 amperes fault closing duty cycle