Kenneth,
NEC 2002 Section 210.20(A) says
"Where a branch circuit supplies continuous loads or any combination of
continuous and noncontinuous loads, the rating of the overcurrent device
shall not be less than the noncontinuous load plus 125 percent of the
continuous load."
overcurrent rating/125% = 80% of rating
This has an Exception:
"Where the assembly, including the overcurrent devices protecting the
branch circuit(s), is listed for operation at 100 percent of its rating,
the ampere rating of the overcurrent device shall be permitted to be not
less than the sum of the continuous load plus the noncontinuous load."
John Barnes KS4GL, PE, NCE, ESDC Eng, SM IEEE
dBi Corporation
http://www.dbicorporation.com/
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