Generator FEMA Reimbursement Process

Can anybody explain the process for getting FEMA to reimburse you for a generator? I understand it’s up to 800. I already have a FEMA number and have applied for, but been denied coverage for hotels, etc. I was told I need to provide proof that my homeowners insurance is denying me coverage for hotels, food, etc before FEMA will reimburse for that. Is it the same process for a generator? How long does it take?