wtk: house aircondition electrical

[sc@rf@ce]

doing some upgrades to my home and gonna install ac in spare room.
question is what size breaker would be sufficient for a 12000 btu split unit
thanx

[ronsin1]

your electrician and AC tech should be able to advise

[supercharged turbo]

your electrician and AC tech should be able to advise

x2
If you doing it yourself and you don't know,bess yuh hire ah electrician

[sc@rf@ce]

Electrician doing installation but for my knowledge wanted to know before hand. Not all electricians on same level

[javishm]

Sometimes even your electrician does not know, you should use a 30amp double breaker since you would need 230v and use at least 6mm square wire

Sounds about right

[rmrunner]

12000btu will work with a double pole 30A breaker. A 4mm will be able to handle the load

[ronsin1]

Sometimes even your electrician does not know

You get what you pay for

[javishm]

Sometimes even your electrician does not know

You get what you pay for

True

[ADONI]

12000btu will work with a double pole 30A breaker. A 4mm will be able to handle the load

Correct!

[nissan4life]

^^^Agreed.
Double 30A Breaker each phase carries 110 so 110x2=220.
220 v outlet which has two hot/positive leads and one negative
4mm wire (always buy more that you need)
OP duh play hero and try it yourself if you have no electrical background.
Electrical Panel go get the better of you, with you sweaty palms and shaky hands.

[sc@rf@ce]

So i opened up panel box and here's the problem. Here's the scenario 2 ac units to be installed means 4 slots in panel box an there is only two available. Guess one room will never have ac. Hand me down houses again eh. Any advice

[ADONI]

So the box full of half size breakers or full size?

[sc@rf@ce]

Full of half size, 1 full size and two free slots

[sc@rf@ce]

Bump

[demented]

Use a 60A breaker and send to an isolator box or sub panel. using 10mm wires or 10mm Armoured cable. In the isolator box or sub panel put your 2 separate 30A breakers and send to the 2 A/C units using the 4mm wire. Could also use 16mm instead of 10mm and use 70A breaker.

This is providing your mains could accommodate all this load.

[ronsin1]

sc@rf@ce please have a qualified electrician assess you electrical system and make the proper recommendations.

while some of the advice above is good. Only a qualified electrician will give you the right advice

Again you get what you pay for

[demented]

[nervewrecker]

The man with the hook up already post in here you know.

[pugboy]

if your panel is short of space you can get breakers which are two single pole in one to free up the space taken by 110v single breakers
but you still need to make sure the panel is balanced loadwise

btw it is best practice to run also run a separate breaker box at the unit location which the a/c guy connects his wires to so it can be switched off with the breaker there if need be, this way he does not have to mess with main panel
normally use one of those little weatherproof boxes which takes 2 breakers in it

[ronsin1]

The man with the hook up already post in here you know.

that guy gave some OK advice it is up to OP to deal with it the proper way
As I said before up get what you pay for

[demented]

^^ ok. thanks.
The A/C specs there was for 110v (20A) window units though.

[ronsin1]

I am saying once again get a qualified licensed electrician to deal with don't play penny wise and pound foolish

[pete]

4mm for 110 plugs in a house or a huge building? Sounds like eil just wants you to use bigger more expensive cable.

[devsingh]

12,000 Btu split unit single phase uses 6A

the unit comes with a 20A tandem male plug
therefore the female of that plug is also rated 20A

the rating of the breaker should never exceed the current carrying capacity of any of the components.

the wire rating of 2.5mm is 25A- more than sufficient

an isolator/ switch or removable plug outlet should be a distance no greater than 1.3m from the appliance.

Please get a licensed electrician to handle this

and don't forget to update the schedule on the panel

[sc@rf@ce]

Got a licensed electrician. I am gonna need to get a sub panel box