We have a Canavac XLS970 central vac unit ( replacing our original
Beam) with an 8.4 inch dual stage Ametec-Lamb motor rated at 13.4amps.
It is running on about 50 frrt of AWG14 Romex on a 15 amp breaker.
Sporadically, on initial startup, it will pop the breaker (Square D
QO15). Upon further investigation, reading Square D's information, I
found they make a "high magnetic" 15 amp breaker for "high performance
loads" like AC, CwntralVac, and microwave applications with a high
"pull-in" current.

Nobody in Ontario has the darn things in stock - Rona did, but since
being taken over by Lowes, they no longer even have them available.

I could wait 'till next week and have the electrical supply order me
one in - but I wanted to fix it NOW --

Turns out the 240 volt (double polet) 15 amp QO breakers are ALL High
Magnetic - and I had a spare one, and a spare slot in my panel - so
I've replaced the single pole with the double pole - we will see what
happens,

Just thought you guys might be interested in knowing the little
tid-bit about the "high magnetic" breaker fix for intermittent
nuisance tripping