U wrote:

I 'inherited' a 3phase 15KW generator without documentation or even a brand
name on it. It works well enough but I don't understand some of the
switches on its front panel. Perhaps somebody more into generators then I
am can explain them?

Except for the start/stop switch (I do understand that one) there are two
other switches, marked with the following positions:

switch 1 :
L1L2
L2L3
L1L2 -- set on this position
OFF
L1-N
L2-N
L3-N

switch 2:
OFF
L1 -- set on this position
L2

What function do these switches have? Is it safe to 'try out' the other
settings?

TIA

Jor


Why do you say it is 3 phase, if you don't have documents?
Generators with 3 hot phase outputs often include delta or Y
selection switches.

3 wire output, including neutral, plus ground, could be a 2 hot
phase system, with a 4 wire connector output.

If it is 2 phase (that's 2 hot phases plus neutral), then the
switching makes sense to me. Otherwise, I would be very sceptical.

The switches control which wires on the output are connected to
output, and which wire is neutral, (itself a hot connector for 110 v
output.)

I wouldn't go so far as switching while the test toaster is plugged
in, unless I was wearing rubber boots.

Terry K