alternator smoking

just finished assembling everything-went to start it
battery was dead
put battery on charge, got semi charged then put the jump leads on
connecting to another car
once jump leads were connected smoke started coming out of the alternator
does this mean its bolloxed
or have i earthed it wrong
the big green plug is in and the bit what sticks out of the top is connected the a o shaped connector
smoked when green 1 was unplugged and the stoppped smokin when the wire was took off the genrator output


any ideas????

what do you mean earthed it wrong


steve theres 2 things to the altenator green plud and power wire from battery

steve

any reason as to why it started smoking then????
alternator bolloxed????

check there is no wired/metal touching it and arcing accross it

steve