Do I need 30 amp or 50 amp?

Excuse me, could you clarify something for me? I'm a bit confused about the power requirements for my cryptocurrency mining setup. Specifically, I'm wondering if I should opt for a 30 amp or a 50 amp power supply. Could you help me understand the key differences between the two, and what factors I should consider when making this decision? I'm looking to ensure optimal performance and efficiency, while also avoiding any potential safety hazards. Thank you in advance for your assistance.