On Tue, 1 Sep 2015 09:27:22 -0400, Stormin Mormon
wrote:

I'm working with some church guys on a roof shingle
project. The compressor is in the garage, at the
power socket. There is air hose going to the air
nailer, which is in use on the roof.

A couple times, the hose was not long enough to
reach. The question was raised, should we get more
hose, or an extension cord and move the compressor?

There can be problems with air flow. There is also
voltage drop in extension cords. Which should we use?

Neither. Move the roof closer to the compressor thereby eliminating
the concern of air flow reductions or voltage drop.

Any time you need my help all you have to do is ask. :-)