WARNING: AC electricity is dangerous and can kill you. If you are not familiar with standard safety
procedures for working around 120/240 V AC then you should hire a pro.
First some questions.
1. Is this a US type power system IE 120/240 V 60 Hz? From your comments I think this is the case but if it is 240V 50 Hz European system the details are very different.
2. Do you have a decent volt meter and know how to use it?
3. Are you familiar with US 60 Hz AC power?
Assuming yes to 1 & 2 and no to 3 then
- US 60 Hz AC has 4 wires: two hot wires of 120V each (lets call them A and B), one neutral wire and one safety
- 120V comes from A to neutral or B to neutral which I think in your system is line #1 and line #2
- 240 V comes from A to B.
Examples (simplified versions)
- you have a 120V battery
charger you would connect A and neutral or B and neutral to the charger.
- you have a 240V air conditioner you connect A and B to the air con.
The way to diagnose electrical problems is to start at one end and work step by step down the line until you find the problem.
So, you say the panel shows 220 V leaving the generator? Check that with the volt meter. 120V A to neutral, 120V B to neutral and 240 V A to B.
If you confirm this then follow the wiring
step by step, testing for proper voltage at each step.
WARNING 2: If this post is not completely clear to you then you need to think about hiring an electrician.