Surge suppressors

Bob Drzyzgula bob at drzyzgula.org
Fri Nov 1 14:37:31 EST 2002


On Fri, Nov 01, 2002 at 10:48:53AM -0800, Jim Lux wrote:
> 
> At 08:59 AM 11/1/2002 -0800, you wrote:
> 
> Actually, the code (2002 version, and it's been that way for a while) 
> allows 15A receptacles on a 20A branch circuit.

This makes sense; the physical outlet is at best only a
hint as to the total current available from that outlet
anyway. In my office it is unusual that a wall outlet
will have a dedicated run back to a panel breaker;
we only get that in the data center and by special
request outside of the data center. It's my experience
(in a general context, not just in my office) that
5-15R outlets are often used on a 20A circuit when it
is shared among several outlets. 5-20R outlets are less
often used on a shared 20A circuit but are almost always
used (in preference to a 5-15R) when the outlet is
served by a dedicated 20A circuit. The L5-20R, however,
is rarely, if ever, used for a shared circuit. Perhaps
this is in the code, I don't know.  YMMV.

--Bob
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