We use
VA for calculating from 220.
There was no Sq ft suggestion, nor anything to indicate the size of the structure. Am I missing something obvious here?
Since the answer was in watts, I would think there had to be more information given and or looking for an answer from another question where the watts were provided.
either way I would consider writing them for help and protest the question if the NEC was listed as a accepted material for testing.
Based on 220.12
from 2107 NEC:
220.12 Lighting Load for Specified Occupancies. A unit load
of
not less than that specified in Table 220.12 for occupancies
specified shall constitute the minimum lighting load. The floor
area for each floor shall be calculated from the outside dimensions
of the building, dwelling unit, or other area involved. For
dwelling units, the calculated floor area shall not include open
porches, garages, or unused or unfinished spaces not adaptable
for future use.
Informational Note: The unit values are based on minimum
load conditions and
100 percent power factor and may not
provide sufficient capacity for the installation contemplated.
Also as why not use watts.
220.18 Maximum Loads. The total load shall not exceed the
rating of the branch circuit, and it shall not exceed the maximum
loads specified in 220.18(A) through (C) under the
conditions specified therein.
(A) Motor-Operated and Combination Loads. Where a circuit
supplies only motor-operated loads, Article 430 shall apply.
Where a circuit supplies only air-conditioning equipment,
refrigerating equipment, or both, Article 440 shall apply. For
circuits supplying loads consisting of motor-operated utilization
equipment that is fastened in place and has a motor larger
than 1∕8 hp in combination with other loads, the total calculated
load shall be based on 125 percent of the largest motor load
plus the sum of the other loads.
(B) Inductive and LED Lighting Loads. For circuits supplying
lighting units that have ballasts, transformers, autotransformers,
or LED drivers, the calculated load
shall be based on the
total ampere ratings of such units and
not on the total watts of
the lamps.
Then we have this for Dryer and Ranges.
220.54 Electric Clothes Dryers — Dwelling Unit(s). The load
for household electric clothes dryers in a dwelling unit(s) shall
be either 5000 watts (volt-amperes) or the nameplate rating,
whichever is larger, for each dryer served. The use of the
demand factors in Table 220.54 shall be permitted. Where two
or more single-phase dryers are supplied by a 3-phase, 4-wire
feeder or service, the total load shall be calculated on the basis
of twice the maximum number connected between any two
phases.
Kilovolt-amperes (kVA) shall be considered equivalent
to kilowatts (kW) for loads calculated in this section.
220.55 Electric Cooking Appliances in Dwelling Units and
Household Cooking Appliances Used in Instructional
Programs. The load for household electric ranges, wallmounted
ovens, counter-mounted cooking units, and other
household cooking appliances individually rated in excess of
13∕4 kW shall be permitted to be calculated in accordance with
Table 220.55.
Kilovolt-amperes (kVA) shall be considered
equivalent to kilowatts (kW) for loads calculated under this
section.
Any way hard to answer a question without good information to base it on.
I would go get my points for the answer and have done so in the past.
If I am owed I collect.
If I owe I pay.
