Def run a dedicated circuit. Why risk it? I ran a 40 amp breaker, split, 2, 4-gang boxes with 15amp plugs. Ran 5k wattts, Dehumid, 4 fans, cloning room, etc. Cost $100 for electrical and I gave the guy on CL $150. Told him I am having a catering and need power to yard. Just not worth it. Can you imagine not being legal and a fire starting, you get it under control, but neighbor calls the 911? Oh snap.