(g)
Electric Resistance Heating. Electric resistance heating systems shall not be used for space heating.
EXCEPTION 1 to Section 144(g):
Where an electric-resistance heating system supplements a heating system in
which at least 60 percent of the annual energy requirement is supplied by site-solar or recovered energy.
EXCEPTION 2 to Section 144(g):
Where an electric-resistance heating system supplements a heat pump heating
system, and the heating capacity of the heat pump is more than 75 percent of the design heating load calculated in
accordance with Section 144(a) at the design outdoor temperature specified in Section 144(b)4.
EXCEPTION 3 to Section 144(g):
Where the total capacity of all electric-resistance heating systems serving the
entire building is less than 10 percent of the total design output capacity of all heating equipment serving the entire
building.
EXCEPTION 4 to Section 144(g)
: Where the total capacity of all electric-resistance heating systems serving the
entire building, excluding those allowed under Exception 2, is no more than 3 kW.
EXCEPTION 5 to Section 144(g):
Where an electric resistance heating system serves an entire building that is not a
high-rise residential or hotel/motel building; and has a conditioned floor area no greater than 5,000 square feet; and
has no mechanical cooling; and is in an area where natural gas is not currently available and an extension of a natural
gas system is impractical, as determined by the natural gas utility.