I know that Sony uses the I-sheng 7Amp 125volt power cord for most playstation products from ps4,ps3,psvita,psp and official dualshock 3 chargers. my question is in japan is the official cord 6amps 125 volts made by jet hewtech? I ask this because I got a soul sacrifice ps vita to repair from japan and it came with the official brick and usb connector and this cord. Why 6amps? Is it cause of the 100volt outlets? Can I use it here in the USA without worry? Will it charge slower because it is 6amps? I ask this because there are some sellers selling on ebay/deal extreme that sell shoddy chargers that won't charge the battery of a vita but as soon as you use the official it will charge correctly. Maybe someone mixed up the cords and sent me the wrong one? Your help would be much appreciated.
Why 6A I could not say but it is safe to use. The actual power box converter (AC->DC) is multi region and supports a range of input power. Plus if you're really that paranoid you can charge the vita via USB (by unplugging the unit to box cable) as the system really only wants 5v DC and was built to support being charged by a PC.
I can't see any Playstation product actually drawing that much amperage. Though they should say on the product what it's maximum draw is. Why it is 6 amps and not 7 amps probably just means they are using thinner wire (cheaper) which has a lower maximum current rating. I wouldn't worry about it. It's just an AC cord. The actual power supply brick or power supply in the console does the real work.
The short answer is that the original spec was based on the US one, which called for 18AWG cable for a low power cordset, with a safe current carrying capacity of 7A. When the Japanese produced their own version of the standard, they converted the wire size to the nearest metric one (0.75mm^2) but kept the same current rating since although the wire was slightly smaller it close enough to not represent a hazard. Some time later, the IEC produced a set of cable standards called IEC 60277 - and they used a more conservative rating method that put the maximum current on that same 0.75mm^2 cable at 6A. So if you want to mark the cable as complying with the IEC standards you have to derate it to 6A. It's a pointless distinction anyway, since the current rating on the C7 style plug on the end of the cable is only 2.5A, so that will overload long before the wire does.
