I have a mobile Kitchen that has a walk-in that operates on 110v, and a freezer on 208/230v. I would like to operate the freezer on 110v because at times 220v is not available. I have tried a 110v-230v step-up transformer but the primary fuze ( 30A ) keeps blowing. The trans is rated 5KW. The compressor 208/230v FLA 45, RLA 9.2. Any ideas.