For the discussion's sake, from the City of Ottawa website on bicycles:
Equipment
Electric bikes (e-bikes) that physically resemble traditional bikes are permitted on City of Ottawa bike paths. An electric bicycle is a bicycle that is powered with an electric motor. It uses rechargeable batteries and can travel up to 24 to 32 kilometres per hour.
Scooter type power assisted devices and bicycles with a non conventional appearance are NOT permitted on the pathways because they tend to be heavier and therefore have an increased risk to health and safety in the event of a collision.
These rules do not apply to mobility devices such as powered wheelchairs, three wheel electric scooters and four wheel electric scooters.