One assumes if you ran it on DC than it wood be better than AC in that case
as a lot of the time on ac its running under the power it was intended for?
Brian

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"Andy Burns" wrote in message
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whisky-dave wrote:

Andy Burns wrote:

What could you do to make an electric space heater less than 38%
efficient?

Give it to a student.

apparently the EU's method is to accept electric heating is 100%
efficient, then divide by a "conversion co-efficient" of 2.5 then add and
remove various fiddle factors

but 100% / 2.5 gives a starting point of 40%, so saying it must achieve
38% or higher is hardly onerous, it just means it can't have more than a
2% parasitic load ...