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Electrical Contains discussions about electrical systems. This includes outlets, panels, wiring, et cetera.

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  #1  
Old 3/26/06, 11:10 AM
John Allingham John Allingham is offline
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Default Academic Question
Could someone explain to me why the data plate on a central A/C condenser always specifies a maximum breaker size while the data plates on refrigerators and freezers don't. Thanks.
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  #2  
Old 3/26/06, 12:32 PM
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Paul W. Abernathy Paul W. Abernathy is offline
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Default Re: Academic Question
John,

Because of the Condenser on the central A/C is usually larger and is directly wired...so it simply shows the MAX size OCPD you can protect the unit......usually larger to allow for start up and so on.

Fridges and Freezers already factor this in and they already have the plugs attached...and usually smaller condensers...


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  #3  
Old 3/26/06, 2:00 PM
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Mark A. Timpani Mark A. Timpani is offline
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Default Re: Academic Question
very nice, short and to the point



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Old 3/26/06, 4:56 PM
Bob Badger Bob Badger is offline
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Default Re: Academic Question
I agree entirely with Paul, I will just add because they are required to be marked the way they are.
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Old 3/26/06, 5:32 PM
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Jeffrey R. Pope Jeffrey R. Pope is offline
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Default Re: Academic Question
It's good to hear from you again Bob. Take off your jacket and stay a while. . .


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  #6  
Old 3/26/06, 10:03 PM
Greg Fretwell Greg Fretwell is offline
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Default Re: Academic Question
If you try to absorb article 440 and the sizing of conductors vs O/C devices you will appreciate how great it is that they do the engineering for you.
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Old 3/27/06, 11:52 AM
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Paul W. Abernathy Paul W. Abernathy is offline
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Default Re: Academic Question
Oh YES...........I will say for Electricians around the US...Thank you Engineers for already doing the math for us......One less thing to think about...


Paul W. Abernathy,CMI,CEI,CEPE
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Old 3/27/06, 6:48 PM
Bob Badger Bob Badger is offline
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Default Re: Academic Question
Quote:
Originally Posted by Greg Fret well
If you try to absorb article 440 and the sizing of conductors vs O/C devices you will appreciate how great it is that they do the engineering for you.
I sure do appreciate it.
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Old 3/27/06, 6:48 PM
Bob Badger Bob Badger is offline
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Default Re: Academic Question
Quote:
Originally Posted by jpope
It's good to hear from you again Bob. Take off your jacket and stay a while. . .
Thanks Jeff.
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  #10  
Old 3/29/06, 8:29 PM
John Allingham John Allingham is offline
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Default Re: Academic Question
Quote:
Originally Posted by pabernathy
John,

Because of the Condenser on the central A/C is usually larger and is directly wired...so it simply shows the MAX size OCPD you can protect the unit......usually larger to allow for start up and so on.

Fridges and Freezers already factor this in and they already have the plugs attached...and usually smaller condensers...
Thanks again Paul.
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  #11  
Old 3/29/06, 10:16 PM
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Paul W. Abernathy Paul W. Abernathy is offline
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Default Re: Academic Question
No problem my friend....thats what we are here for......Actually it is the main reason I came here...To help when needed..


Paul W. Abernathy,CMI,CEI,CEPE
NECŪ Consultant/Columnist
www.twitter.com/ElectricalGuru

- ICC & IAEI Certified Electrical Inspector
- ICC & IAEI Certified Electrical Plans Examiner
- Look for my article in the Nov/Dec 2009 IAEI Magazine
- 2007 "Top Gun" Winner - Mike Holt Enterprises
" visit www.TheElectricalGuru.com Today !"

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