i want to now which is the live wire and which is nuteral thank you
In us with 110v ac the black wire is live. The white wire is the grounded conductor. If it is double insulated and has no green wire or grounding prong, it doesn't really matter, but it is better to follow the rule for the benefit of the next person. Note the white wire is not to be grounded any where but at the entrance panel. Do not connect the green and white wires anywhere else. Do not let the white or black wires touch metal or the frame of the tool.
Henry is correct. The other answers are wrong.
Black is hot , white is nuetral , green is ground
No. you are able to besides the undeniable fact that convert it to a minimum of one one hundred twenty volt circuit in case you do here: on the panel, do away with the present 2 pole breaker and replace it with a single pole. deploy a breaker sparkling in the conceal to satisfy code or yet another sg pl breaker as a spare. Or for the 2d circuit you curiously might want to have. Now then, the present twine ought to be as small as #10 (for a small A/C in basic terms unit) or as great as #4 for a great unit with strip warmth. you will ought to splice a short piece of the hot twine to the present as a manner to get it below the breaker. it somewhat is allowed by utilising Code. the different twine from the previous breaker with ought to be coloured white as much as you are able to. some jurisdictions enable as low as 6 others want the completed uncovered length. Now flow it to the impartial bar. through fact the version in value between a 15amp and 20amp circuit isn't plenty, i want to propose 20. on the a/c, if there is not a junction container present deploy one. If there's a pull-out, knife swap or breaker sort disconnect present i want to propose changing it to a 4 sq. x a million-5/8 deep steel container w/conceal. utilising twine nuts splice the present wires to the hot ones. do not forget approximately to floor the container (in line with Code). in case you're working 12/2 romex or MC you need to strap it interior of 12 of the container and each 4' there after. The suggestion to set a 30amp sub panel would not sound particularly appropriate to me purely now. yet then it somewhat is previous due and that i'm unable to make the hassle to seem it as much as be certain. Sorry. If time helps the next day i'm going to do my maximum suitable to study it an edit my answer.
On AC it's black is hot and white is nuteral and on DC its black is nuteral and red is hot so be careful and don't get killed. P.S. AC stands for alternating current and DC stands for direct current, now go learn what makes them diffrent and also learn who nicoli tessla is and don't stop learning! Oh yea, while the AC unit is turned on the nuteral wire will be hot so don't touch it because the excited electrons are seeking ground so they will travel through the white wire to ground or through you!
