Compliance is the most critical factor for mobile food units. You must verify that the electrical system (wiring, breakers, and sockets) matches your country's voltage (e.g., 110V for US, 220V for EU/AU) and carries certifications like UL, CE, or SAA. For gas-powered equipment, ensure the installation includes gas leak detection systems and meets NFPA 96 standards for ventilation and fire suppression. Always request a Certificate of Conformity (CoC) from the manufacturer to facilitate local health department permits.