List current and future projects
Tell the professional about equipment you are planning, even when it is not part of the first installation. This helps make the assessment relevant to your broader plans.
Separate panel work from service work
A panel replacement and a service upgrade are not necessarily the same job. Ask what is being proposed, why it is needed and which other work depends on it.
Discuss appropriate alternatives
For a charging project, ask whether the available capacity and suitable power-management options can support your needs. Do not assume the largest equipment or a service upgrade is always necessary.
Understand access and interruptions
Ask the responsible installer to explain property access, any planned disconnection, utility involvement and the sequence of work before scheduling.