110 to 220v

[Blunted22]

or it is 120 to 240v....? Anyways heres my question.... i got 75a to use and i happen to be at 80% of my circuits so.... to install a on 220 or 240 what ever it may be this is what i do correct...?


Get another 30a breaker install it next to the same 30a breaker take the wire that is connected to the box's metal ground bar( i think that is what it is but u know what im talking about) and connect that wire to the new breaker that you just installed. So now u have the wire running to both 30a breakers and nothing to the side bar.... meaning u are this on a 30a breaker now you are using to breakers for the same 30a circuit but now its a 220a and cuts the amps in half...


Please tell me if im correct or totally wrong....

 

[Guest]

Its 115 or 225 or 112 or 236 depending on how close you are to the transformer,but its the same gig.I'm assuming you have a #10 wire 120V circuit protected by a single pole 30 amp breaker correct?You want to change this to a 240V circuit protected by a 2 pole 30 amp breaker?First you need the extra space for the larger breaker,if you dont have the space some rearranging can be done.To be short you must remove the single pole breaker,replace it with a 2 pole breaker of the same amperage,leave the ground alone and put both black and white under the breaker terminals.You will have removed the white wire from the neutral bar.

 

[Blunted22]

ok so ill be removing the single 30a breaker and the white off the nuetral bar.

Replaceing it with a double 30a breaker and putting the black and the white in the new double 30a breaker with the nuetral still hooked up into the bar....


Last but not least ill have to put in new 240v plugs into the the room... But thats all right?

 

[yamaha_1fan]

ok so ill be removing the single 30a breaker and the white off the nuetral bar.

Replaceing it with a double 30a breaker and putting the black and the white in the new double 30a breaker with the nuetral still hooked up into the bar....


Last but not least ill have to put in new 240v plugs into the the room... But thats all right?

You have two bars, a ground and a neutral. You are contridicting yourself above. Take the white off the neutral and put that into the breaker, with the black that is already on the single breaker. Each side will have its own terminal. And yes you will need a double pole breaker, you cant use two single breakers. Then nothing for that circuit will have a neutral but on a 240 circuit you dont need it for most items.

You really dont need new plugs. Technically the outlets should be capable of handling the 240. The issue lays in when people forget and plug in 120 devices into the 220 outlet and destroy it. So you need to decide what to do. I would just label the outlets 220 so you dont forget




SImple job, should take a few minutes. You should shut off the main breaker outside. You dont need to but I would highly suggest it as it sounds like this is your first time

 

[Guest]

I agree wholeheartedly,not so much for the cost of 240V receptacles and cordcaps(plugs) but I like the idea of not having to splice on a 240V cordcap.Splices are weakpoints in an electrical system and using a 120V receptacle on a 240V circuit when wired correctly is preferable to me.And if your ballast ever encounters another 120V system its a matter of switching a ballast wire in the housing,no splices required.As for the panel like yamaha said dont make it complicated.Dont touch the ground wire,put the neutral and black under the 2 pole breaker terminals.At the 120V receptacle put a black and white on either side it doesnt matter,and the ground under the ground screw.I've been using 4 1K fixtures wired for 240V with 20 amp 120 receptacles for 7 years now.Just dont plug that 120V vacuum cleaner into the box unless you're entering your hoover into the daytona 500.

 

[Blunted22]

lol thanks guys i think i got it take out the single pole replaced with a double pole, plug the black in one and then take the white off the neutral bar and plug it into the other one...

is that right? So in the end i will have a white and black plugged into the double pole breaker and keep the ground wire(naked wire) screwed into the nuetral bar?

im confused about the neutral and ground bars i guess i thought there was only one or they were the same.... not sure really lol

 

[yamaha_1fan]

as far as the ground and neutral being together, I have to leave that to someone else. In some panles they are seperate, some they are the same. Not sure what you do then

Otherwise what you said was right

Also make sure you get the same brand of breaker. Siemens breakers may not go into a GE panel, etc. Best to take that single out and take it with you to the store

 

[Guest]

Thats correct man if all your green and white wires are on one busbar,it's not uncommon in older services.It no problem so long as all circiuts from the panel are branch circuits,not going to a subpanel.The neutral carries current the same as the hotwire,they are considered ungrounded conductors.Only the groundwire is considered a non current carrying grounded conductor.However the neutral and ground are both at ground potential at the main panel and are connected by one means or another.They used to do it on the busbar in the main panel in the olden days lol