Aluminum Wire Wound HHO Generator

its an aluminum wire wound hho generator the core is made out of stainless steel i dont know what grade i found it out of an old water heater for a hot tub not sure what grade of stainless steel it is. works good. I'm using baking soda as the electrolyte. i'm not sure of the amperage draw but it seems next to nothing regardless of how much electrolyte i add