Includes detailed installation instruction manual The GEN-100 Interlock Kit fits GE 100 amp panels with a horizontal throw main breaker and 1 3/8 vertical spacing between the closest edge of the main breaker cut-out and the closest edge of the generator breaker panel cut-out The manual transfer switch device allow portable generator safe back feeding power supply to distribution panel and home line. Murray 100 Amp Breaker Interlock Interlock Kit Siemens | Generator WR-05 Replacement Generator Interlock Kit GEN-100 For GE 100 Amp Panel Main / Gen Breaker Square D Interlock Kit 100 Amp Package:Our Generator Interlock kit include 2 × Interlock plate, 6 × Screws kit, 2 × Drill Bit, 2 × Instruction Bulletin, 4 × Generator Start-Up Procedure Label, 16 × Remind Label, 4 × Zip Ties. Shop for reliable interlock kits that ensure a safe, code-compliant electrical panel to generator interlock for dependable backup power Installation Note: Before installing the interlocking kit, Attach the screws to the interlock kit first. Aren't putting electrician in dangerous and damage electric devices during power outages.