TomR wrote:
In an earlier post of mine about adding a second neutral/ground bar
to a Siemens Main Load Center electrical panel, I posted the
instructions for doing that:

"Here is a link to the ECCNB16 Instruction Sheet which shows this
neutral bar
kit and how to install it:

http://www74.zippyshare.com/v/43794674/file.html ."

In Step 4, on the right hand side, it says to tighten the two screws
using 40-45 lb-in of torque.

I don't have a torque wrench, and I would rather not buy one just for
this unless I need to.

My question is, about how tight if 40-45 lb-in when it comes to
tightening these screws?
.....,

Thanks everyone for your replies. I think I now have a fairly good
understanding of what 40-45 in-lbs means, so I think I'm on the right track
by just tightening the screws so they are definitely tight but not
overtightening them

Using the concept of about 4 lbs of pressure on a 10-inch bar (or a little
less on a 12-inch bar) gives me a good idea of what they mean. I can do
that.

About the size of the screws -- the kit says it comes with two 1/4-28 x
13/32 screws. So, I think they are 1/4 inch screws, 28 threads per inch,
and 13/32 in long. They go into the same threaded holes in the neutral bars
that the rest of the regular neutral and ground wire attaching screws go
into.