[ProAudio] Proper Grounding Replies

Jim Brown jim at audiosystemsgroup.com
Mon Nov 4 20:38:13 EST 2019


On 11/4/2019 8:00 PM, Corey Bailey Audio Engineering wrote:
> This house was originally built in 1932 and has suffered several bad 
> remodels.

Electrical codes (laws) vary a bit from one place to another, but nearly 
all are either based on the National Electrical Code or are quite 
similar to it. Some with strong unions require that all wiring either in 
steel conduit or an armored cable called BX that can be fished through 
walls. Here in California, and in most of the rest of the US, Romex 
(three conductors in plastic sheath) is nearly universally used. There's 
even a hardened version for direct burial!

Years ago, My daughter bought an old house in Chicago, and I hooked her 
up with an electrician who was able to rewire it by running conduit on 
exterior walls and through the basement. In an old building (built just 
after the Great Chicago Fire) I bought there, I had it rewired from the 
attic over the second floor and the basement under the first floor. In 
both cases, two-conductor wire and outlets were replaced by three wires 
and three-wire outlets. In the process of doing a minor remodel, my 
contractor pulled out most of the original gas lighting pipes (although 
on the first floor, they had been used as conduit to carry wiring for 
those new-fangled electric lights).

Jim Brown


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