Which you can tell from this:It is American
Which you can tell from the fact that that page says things likenot the same in Britain.
"Black wires are always used for hot wires ... Black Wires are never used as a Neutral".
I'm not saying the following to belittle you, or denigrate your intelligence, or imply you are inadequate in the trouser department:
You really, really, do not know enough fundamental stuff to be fiddling with electrics.
PLEASE put doing on hold until you know more than you do.