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masterofnone1

11:40AM | 10/15/07
Member Since: 10/14/07
4 lifetime posts
Bvelectrical
I currently built a addition to my grageshop, I installed a "Buddy Box" off my main electrical box, It is a 60AMP box, my box has two spaces for two 30amp breakers and 5 additional slots for 15,20,30 amp breakers.

I don't quite understand amps and volts, I want to run my freezer and refrigerator on one 20 amp breaker (is that advisable?)

The only things in my two shops that may run together are.

the refrigerator and freezer.

The Exhaust fan and a standard power tool.

The lights of course.

My Air compressor and a power tool.

With 60 amps and 5 slots how can I wire all the plugs?

refrigerator and freezer separately 2 20 amp breakers. that leaves me 4 slots

the lights 1 15 amp breaker, that leaves me 3.

my exhaust fan 32*32*32 one breaker, 20 amp, that leaves me two.

with 10 more outlets needed for power equipment, what do I do?

Should I get a bigger 30amp Box with more slots?

Should I wire 5 plugs to one 20amp breaker?

I would like to hear anyones suggestions that has experience with this type of electrical situation.

Masterofnone1

TimBonham

12:18AM | 10/18/07
Member Since: 01/09/07
197 lifetime posts
"I want to run my freezer and refrigerator on one 20 amp breaker (is that advisable?)" Not only NOT advisable, it's illegal in most places. These 2 appliances are required to be on separate circuits. That's what the code requires for houses. Your local inspector might be more lenient in a garage (non-occupied space) -- but I doubt it!

"Should I wire 5 plugs to one 20amp breaker?" Well, you could. There's not much limit on how many receptacles can be wired into one circuit -- just a limit on how many amps that circuit can carry.

But I would say you should NOT. There's not much point in having lots of handy receptacles if the wiring is so light that you can't really make use of more than a couple of them. Many people are living with old wiring where you can't turn on the toaster in the kitchen if someone is using a hair dryer in the bathroom upstairs -- why would you want to create a similar situation in a new wiring job?

It sounds like the 60 Amp service will be fine for what you're planning in this building -- the limitation is in the number of breaker spaces in the box. My recommendation would be to replace that box with a bigger one, with more breaker spaces. Then you can have lots of separate circuits for stuff. It will probably only be $25-$50 for a bigger box, and $2 each for more breakers. You're going to spend hours wiring this building; spend that extra money now to make it a more usable workspace.

househelper

10:42AM | 10/18/07
Member Since: 03/31/05
265 lifetime posts
Not sure how you are counting breaker space, as most panels have an equal number of spaces available. For a 60A panel it should be 4 or 6.

You can run the refrigerator and freezer on the same 20A circuit. There is no requirement to run them on dedicated circuits. And if your inspector permits, you can run both off the same duplex receptacle, locate that receptacle behind the appliances, and not have to GFCI protect that receptacle.

I would then run the lights and exhaust fan on one 20A circuit, the compressor on a dedicated 20A circuit, and use the rest for the receptacles (2 or 3 remaining circuits).

Billhart

12:21PM | 10/18/07
Member Since: 04/25/05
1916 lifetime posts
The code says that any "fastend in place" equipment that uses more than 50% of the circuit rating can't have anything else on the circuit.

I would take that to include reifgerators and freezers due to their size and weight. They won't be randomly connected to different receptacles like a vacumum cleaner would be.

And both of these run most of the time.

So if either one draws more than 10 amps they should be on seperate circuits.

househelper

05:53PM | 10/18/07
Member Since: 03/31/05
265 lifetime posts
Refrigerators and freezers are not fastened in place.

Billhart

08:35PM | 10/18/07
Member Since: 04/25/05
1916 lifetime posts
I gave my logic whether you agree with it or not.

Also

"(2) Total Cord-and-Plug-Connected Load Where connected to a branch circuit

supplying two or more receptacles or outlets, a receptacle shall not supply a total cordand-

plug-connected load in excess of the maximum specified in Table 210.21(B)(2)."

That table limites you to 12 amps total if you use a 15 amp receptacle or 16 amps if a 20 amp receptacle on a 20 amp circuit.

If this are "full size" appliance they would probably be over that limit.

househelper

10:25AM | 10/19/07
Member Since: 03/31/05
265 lifetime posts
Normal running amperage of a refrig or freezer is about 5A. Startup amperage may jump as high as 16A, but that is short term. My logic says you are OK to run them on the same circuit. The NEC does not say either has to be on a dedicated circuit.

Billhart

10:55AM | 10/19/07
Member Since: 04/25/05
1916 lifetime posts
My 22 cf side-by-side ENERGY STAR LISTED refigerator has a nameplate current rating of 11.2 amps.

masterofnone1

11:31AM | 10/19/07
Member Since: 10/14/07
4 lifetime posts
Your advise is greatly appresated I will get a biger box with more slots and NOT put the frig and freezer on one breaker, I also liked the post any FIXED equipment must be on a seperate breaker, that would include my 36*36*36 ehhaust fan and my airconditioner, great info. I want to thank you all for your input, I love this Sight.

Masterofnone1
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