On Wednesday, December 30, 2015 at 9:04:45 PM UTC-5, wrote:
On Wed, 30 Dec 2015 12:15:58 -0800 (PST), Uncle Monster
wrote:

On Wednesday, December 30, 2015 at 7:29:32 AM UTC-6, Doug Miller wrote:
Uncle Monster wrote in
:

The transformer on the pole may have a tap that you power
company could move to change the voltage on one leg.

No, it probably doesn't. And the problem isn't what's coming from the power company anyway.
The problem is that his neutral connection is bad.

I believe I mentioned in a previous post that the neutral connection in the meter base could be a problem if it's loose. There are all kinds of things that can cause an imbalance which is why, in another post, I wondered if the problem had just suddenly appeared after everything had been normal from the start. If the OP has inspected the neutral connections everywhere he can get to and believes it's a bad neutral connection then he should cut the seal off the meter, pull the meter and check the connections there. So if his neutral connections are good all the way through to the meter base, what should he do next if he doesn't have pole climbing gear? Of course he should contact his power company and inform them that he cut the seal off the meter socket and the reason why. If it's one of the newer remote reading meters, the power company will know anyway but it's best to inform the utility. ?.?

[8~{} Uncle Electric Monster
My saying an undersized fead and inballanced load could cause it would
only be because the neutral was overloaded by the inballance. With a
properly balanced load the neutral carries NO current.

Perfectly balanced would be a better term, which of course isn't possible
unless all the loads are fixed. In a shop like he has, like almost anywhere
else, the loads are never going to be perfectly balanced. The problem isn't
the balancing, the problem is he has a bad neutral connection.