• Generator transfer switch generator coil part# 077220A replaces 77220A for 100Amp Generac / Guardian Transfer Switch.
• This is the Bottom Coil, Utility is the Side Coil.
• Consult owners manual for proper part number identification and proper installation.
• This is the electromagnet coil powered by the generator in Home Stand-by sets.
• We recommend changing the limit switches # 084464 at the same time as they could have been damaged if the coil shorted out!