iec
world plugs
Type standard power
rating earthed polarised fused insulated
pins europlug
compatible
iec world plugs type1
standard
power rating
earthed
polarised
fused
insulated pins
europlug compatible
list length list_first list_second
list length
text <c,text(text)> <n,text> text text text text text
a nema 1-15 unpolarised 15 a/125 v no no no no no
which power rating is previous to type d
WDT NN NN VBD-AUX JJ TO NN NN
Socket 0.2 A/250 V Plug Unspecified7
select c3 from w where id = ( select id from w where c1 = 'd' ) - 1