Bitmain says the following regarding their S4, "Power line not included. You may look for one line with no less than 16A in your local market."
Well, I've searched the WORLD WIDE WEB for a C14 Power cord and cannot find one rated higher than 15 amps.
WTF?
Pretty sure they made a typo and meant 16Awg. If you're running on 240v you need an 18AWG cord, ND if you're running 120v use a 14AWG cord.
I bought this one:
Amazon.com: Tripp Lite Heavy Duty Power Cord, 16A,14AWG (NEMA 5-15P to IEC-320-C15) 8-ft.(P019-008): Electronics
http://www.amazon.com/gp/product/B0091F8GP6/#
It's a replacement for a heavy duty server room style UPS. When i got it, the packing slip said 16A but the packaging the cord was in said 15A. Anyway until I received that my S4 ran fine for 2 days with a standard el-cheap-o 10A PC power cord that I had laying around in a box in my closet, so I wouldn't stress about it.
I have seen the one you purchased on Amazon. It is a kettle cord. A C-15 made to fit a C-16 connector. It is used for higher amperage appliances. It also has a valley in the C16 connect which does not allow a C-13 cord to plug into it. However, a C-15 or C1-3 cord can plug into a C-14 connect. The S4 has a C-14 connect. I'm just going to purchase Trip-Lite 14 AWG C13 10 feet cord for the S4. Uses the same gauge wire as the Trip-Lite C-15 8 feet cord you purchased from Amazon.
Thanks for your description.
David
Something else yall need to remember is the length of the cord. A 10 ft cord will get hotter and pull more amps than a 3 foot cord. All my miner power cables are 3 ft or less with an iso bar behind them.
JT