Peter.SMA makes a SB 4000US with a CL (current limited) marking.you
would need to order this specifically. They limit the max continuous output
to16A (16*1.25 =20) instad of 16.66 so that after adding your 1.25
multiplier you can still use a 20A breaker in a 100 amp panel and you are
then
Peter,
You can address the inspector's first complaint by pointing to the new
language (NEC 2008) in 690.64(B)(2):
"In systems with panelboards connected in series, the rating of the first
overcurrent protection device directly connected to the output of a
utility-interactive inverter(s) shall b
We occasionally run into a dual headache: a congested AND underpowered
service panel.
Case in point a 100A Zinsco main panel with no room for a two pole breaker
for inverter back feed.
Normally we pull two 20A/120V branch circuits out of the main panel into a
subpanel, back feed the subpanel with
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