MrWizard wrote:
i have never seen 10FT as a standard on any generator
i would not mine having a 'new' distance added to standard testing list
but i have never seen it used by any mfg or advertiser
The article in my link seems to "suggest" that maybe 10 feet, along with 23 feet and 50 feet, are part of some standard somewhere - but I haven't dug into govt. standards to confirm it one way or the other.
It seems strange that Onan has used 10 ft. (3m) for years in the noise specifications for at least their smaller generators for RVs ... I assume they had/have a reason for using 10 feet. Check this typical RV Onan generator's specifications - at the top on the right:
https://powersuite.cummins.com/PS5/PS5Content/SiteContent/en/Binary_Asset/pdf/Consumer/specsheets/a-1399.pdf
