It’s important to understand that the installation or replacement of an electrical panel should never be entrusted to anyone other than a licensed electrician. Specialized training is needed in order to ensure a safe installation. An electrical system that’s inadequately installed or doesn’t comply with current standards can lead to an injury or fire.
In other words, never perform the duties of a certified electrician. Doing so is illegal in Quebec, anyway.
Also bear in mind that if an amateur installation of an electrical panel results in an accident, your your insurance provider won’t compensate you.