I am a little confused about the voltage posts.
Do I need to find out if my voltage is actually 208V, 220V/230V or 240V since electricians seem to just throw around the number that suits them when speaking of 110/120, 220/240V and 460V? Would the SP30 actually perform worse if the answer is 208V?
No. 208 is fine. 220 is fine. 240 is fine. You don't need to know which it is. The power supply will figure it all out for you and work great at any of these inputs. You just can't expect good performance at 120V, 110V, et cetera.
I think 208V is still limiting factor for SP30 with Emerson PSU.
Collider, jtoomim, Roadsress or anyone with the early machines:
Please post your statistics and whether you achieved sustained ~4.5TH at 208-220V (please post your voltage) and what was the speed at 110/120V if applicable (I assume 4.1Th). Thanks.
I'm getting just under 4.4Th/s @ 205v/205v
Input temp is 19C
Hoping to tweak a little more and get it up to 4.5, any suggestions (other than what ive already read in this thread, and tried)?
Please contact zvi@ for a possible tweaking. Zvisha is still tuning the firmware.
because of the FCC limitations on current in wires.
If I understand correctly, SP30 have 3 performance levels based on input voltage:
High level at voltage level 220/240V where PSU is able to pull >1300W
Mid level at voltage level 208V where PSU is able to pull up to 1250W (at least for Emerson PSU units)
Low level at voltage level 110/120V where PSU is able to pull up to 1100W
