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electrical wire sizing: A Home Inspector Never Makes Assumptions - 02/19/08 12:59 PM
... or at least they shouldn't.  Just last week I inspected a 4,200 sq. ft. house with a pool and spa and a 500 sq. ft. pool house going for $1.2 million.  Wow, with such a nice and expensive house there must not have been any problems... right?
Wrong.  The main panel had two serious issues.  The first was that one of the 40-amp breakers (circled below)had undersized wires.  That basically means that the wire could overheat and scorch before the breaker even tripped. 
The second issue was the same as the first, but for for the main breaker! (pointed to below)  The main … (9 comments)

electrical wire sizing: Proper Wire Sizes in Electrical Panels - 01/05/08 09:48 AM
While inspecting houses I often find problems in the main electrical service panel.  The most common for me is that the breaker/fuse for the A/C has undersized wires or that the breaker amperage is too large.  But I also see on other breakers/fuses where the wire sizing for some breakers is too small.  So what does this mean?
Every size breaker/fuse has a certain minimum wire size that is needed.  If the wire size is too large for the breaker/fuse, that's not a problem, assuming the breaker size is correct.  However, if the wire size is too small the wire can scorch, melt … (8 comments)

 
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Rancho Cucamonga, CA

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