Enter
the breaker size and circuit description. In this
example
the connected VA is entered in the VA column.
If
the panel is 3-phase WYE an H column appears. If the
load is electronic equipment such as a computer or
electronic ballast, you need to identify the load with an
H.
The
NEC requires the neutral conductor be treated as a
current carrying conductor when 50% of the load is
subject to harmonic currents. When this harmonic load
condition exists, the program will de-rate the conductor
amps to 80% per NEC requirements.
Lighting
is a continuous load so enter a C in the I column. The
program will add 25% for continuous loads per NEC.
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