How many outlets on a 20 amp breaker

[Born_Annoyed]

Single gang boxes.
just the usual stuff small TV. Laptop computer, Stereo.
I have the fridge on it's own 20 amp breaker and the compressor on it's own 20 amp beaker as well.


Thanks.

 

[mrb]

you can put as many as you want.

 

[The Alchemist]

Most small stuff draws very little amperage, like 1-2 amps unless it has a motor, so figure out how much stuff you want turned on at a time and start adding it up. I'm sure some of the electricians in here will say what a safe percentage of the breaker you can run sustained, but I'm guessing 50-75% is a safe margin.

 

[Charles (in GA)]

NEC 220.14(l) says to use 180 volt-ampres per strap or yoke to do your calculations, and if you are using a multiple receptacle of four or more receptacles (a rather uncommon device) then you use 90 va per receptacle.

This works out to TEN straps or yokes (single, duplex, or triplex receptacles) on a single 15 amp breaker, and THIRTEEN straps or yokes (single, duplex, or Triplex, receptacles) on a single 20 amp breaker.

Charles

 

[mrb]

NEC 220.14(l) says to use 180 volt-ampres per strap or yoke to do your calculations, and if you are using a multiple receptacle of four or more receptacles (a rather uncommon device) then you use 90 va per receptacle.

This works out to TEN straps or yokes (single, duplex, or triplex receptacles) on a single 15 amp breaker, and THIRTEEN straps or yokes (single, duplex, or Triplex, receptacles) on a single 20 amp breaker.

Charles

I thought that was for commercial occupancies.

 

[Stuart in MN]

That 180VA rule of thumb is for commercial. For residential, the Code doesn't have any limits but of course you need to use common sense.

 

[Charles (in GA)]

220.14 is titled "Other Loads - All Occupancies" and is found in Article 220, "Branch-Circuit, Feeder and Service Calculations". It does not differentiate Residential from non-residential or commercial from non-commercial.

Charles

 

[mrb]

220.14 is titled "Other Loads - All Occupancies" and is found in Article 220, "Branch-Circuit, Feeder and Service Calculations". It does not differentiate Residential from non-residential or commercial from non-commercial.

Charles

i just looked at 08.
220.14(J) covers dwelling units and it says the general use receptacles are included as part of the general lighting load calculations and additional calculations are not required. Therefore, the 180va rule does not apply.

 

[Born_Annoyed]

Think of this project as an upside down Tee. That being said I want to run another single gang box left and right with a single outlet in each box.
The only thing that draws really any amps is a shop vac, but on occasions a 1/2 inch hammer drill and what not.

Thanks for the replies on the thread I don't think I'll have a problem, and if i do I'll ask you guys again

 

[ripsnortMN]

Used to be 13 I think. Not sure what the NEC says now.

 

[mrb]

Used to be 13 I think. Not sure what the NEC says now.

13 comes from 180va per receptacle. This does not apply to dwelling units.

 

[Charles (in GA)]

i just looked at 08.
220.14(J) covers dwelling units and it says the general use receptacles are included as part of the general lighting load calculations and additional calculations are not required. Therefore, the 180va rule does not apply.

I think the OP is talking about his garage, not a dwelling.

Charles

 

[walrus]

I think the OP is talking about his garage, not a dwelling.

Charles

Unless its commercial it doesn't matter.

 

[mrb]

I think the OP is talking about his garage, not a dwelling.

Charles

220.14(J)2 includes receptacles in the garage. 180va rule still doesnt apply.

 

[Born_Annoyed]

Just to clear things up. It is an attached 13 x 18 Also project completed. Very straight forward and everything is working just fine. 1 20 amp breaker 4 outlets in conduit per Palm Beach County code. I had a licensed electrician look at my work and he stated it looked like a pro did it.

In my original post I just wanted to know how many I could put on the 20 amp breaker, just in case I wanted to add more outlets. I don't like extension cords running all over the place.

 

[shawnnichols]

10 is the most my county will allow on 15amp and 12on 20 amp.

 

[randydupree]

whats the code on how far apart they have to be?