Federal Register - September 1, 2021
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Source: Federal Register
49154
Federal Register / Vol. 86, No. 167 / Wednesday, September 1, 2021 / Proposed Rules in the August 1997 Final Rule. As part of that rulemaking, AHAM presented to DOE data from the Procter & Gamble Company P&G showing the distribution of consumer load sizes for 2.4 ft3 and 2.8 ft3 clothes washers, which represented typical clothes washer capacities at the time 1995.26
justification for DOEs proposed changes.
The current load size definitions i.e., the defining of three load sizes, and the equations used to determine each of the three load sizes are based on consumer usage data analyzed during the test procedure rulemaking that culminated
The 1995 P&G data indicated that the distribution of consumer load sizes followed an approximate normal distribution slightly skewed towards the lower end of the size range. Figure III.1
shows the summarized data presented by AHAM.
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In the August 1997 Final Rule, DOE
defined three load sizesminimum, average, and maximumto represent this normal distribution. 62 FR 45484, 45490. The minimum load size represented approximately the 14th percentile of the distribution i.e., the
lower 14 percent of the cumulative distribution; the average load size represented approximately the 14th through 88th percentile i.e., the middle 74 percent of the cumulative distribution; and the maximum load size represented approximately the 88th
through 100th percentile i.e., the upper 12 percent of the cumulative distribution.27 Figure III.2 illustrates the boundaries representing the three defined load sizes overlaid with the P&G load distribution data.
26 The full data set presented by AHAM is available at www.regulations.gov/document/EERE2006-TP-0065-0027.
27 See the table titled Relationship of Water Fill Factors to Cumulative Load Size Distribution on page 22 of the data presented by AHAM as part of
the rulemaking that culminated in the August 1997
Final Rule, available at www.regulations.gov/
document/EERE-2006-TP-0065-0027.
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Figure 111.11995 Procter & Gamble Consumer Load Size Distributions as Provided by AHAM
