"Al D" wrote in message
. ..
In the main service panel there are 2 bus bars ( neutral and ground ). I
don't have any screw holes left to add an additional branch circuit to a
detached subpanel located 60' away from the main. Can I:
1. Add an additional bus bar to the main
panel and if so, how do I connect it to the old bus bar(s)? or
2. Replace the entire full bus bar with a
new longer one, or
3. Neither of the above 2 can be done at
all???? If this is so, what can I do to solve this problem?

In the subpanel, the bus bar that is away from the breaker panel itself
that I added to the subpanel box, does that bus bar become the ground bar
or the neutral bar? I think it's the ground bar because it IS separate
from the rest ( not bonded ). Is this the right thinking on that?

In the main service panel, your ground bar and neutral bar are tied
together. Buy a new ground bar and bolt it to the panel with a substantial
sized conductor to the existing ground bar. In the sub panel, the added
bar is for grounds only. Do not connect a bonding screw or jumper to the
neutral bar