I use a SurgeGuard when running a generator as well, even at home.
During Hurricane Laura this year, my generator at home began producing low voltage and the SurgeGuard tripped it off-line. I'm glad it did, because the 90VAC and 45Hertz the generator began producing wouldn't treat my equipment very well for very long. The SurgeGuard caught the problem instantly and let me know by shutting off all power.
I put a backup generator in service through the SurgeGuard and all was well for the duration, which was about seven days for me.
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