Ask Experts Questions for FREE Help !
Ask
    robe88's Avatar
    robe88 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 25, 2008, 10:56 AM
    Maximum Breaker Size
    What is the maximumbreakersiveyou can legally put in residential wiring, not counting a/c unit
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Nov 25, 2008, 12:12 PM

    <moved from a sticky>

    Somewhat ambiguous. The breaker should not exceed the main. Most boxes limit the breakers to 100 A.

    In a special case, you could have 400 A service and in that particular box split into two 200 Amp breakers. This box is special and typically mounted outdoors. 400A service is also extremely rare.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Maximum load on 20 amp circuit breaker [ 14 Answers ]

I am aware of certain normal maximums. I guess I'm looking for somebody to tell me that I'm pushing things too far, or not. I want to hook up a portable air conditioner (Sunpentown WA-1220E) which is rated at 950 watts (and, mysteriously, at 9.0 amps) along with an HP 4Si printer, which is rated...

Breaker size [ 2 Answers ]

I have a 7.5 hp motor that was wired 480 volts 3 phase rated at 14 amps and I need to change from 480 volts down to 208 volts. What would the breaker size need to be rated for at that voltage.

Compatibilities between awg wiring, breaker amp size, outlet amp size [ 4 Answers ]

Hi. Is there a resource out there, prefereably on the web, that outlines the compatibilities between awg wiring, the breaker amp size, outlet amp size, how many recepticles/outlets can be on x amp outlet, etc? For example, it would be nice to see something that shows: you can use a 20 amp...

Does OE 6.0 have a maximum group size? [ 2 Answers ]

I have a group of 65+ email addresses for my club. When I try to send a message to the group, I initially get an error which delays the sending of the message. Once the error is cancelled, the message is sent. Some recipients report receiving 2 emails, one of gibberish and the other readable. ...

View more questions Search