Disconnect

In the context of home charging, a disconnect is only required for circuits more than 60A (>48A EVSE). For example, a 80A EVSE.

A required disconnect shall be lockable in the "off" position, such as with a padlock for worker protection. Note there is no requirement for it to be within sight or certain distance of the EVSE.

The CEC says more than 150 volts-to-ground, but that is not the same as when we talk 240 volt level 2 chargers. A 120V/240V single-phase system typical in a residence is two lines, each 120 volts-to-ground that are opposite, such that using them together provides 240 volts to the equipment. But this is still under 150 volts-to-ground. Similarly, in a 120V/208V three-phase system, each line is 120 volts-to-ground.

CEC: 86-304 Disconnecting means
1) A separate disconnecting means shall be provided for each installation of electric vehicle supply equipment rated at more than 60 A, or more than 150 volts-to-ground.
2) The disconnecting means required in Subrule 1) shall be on the supply side of the point of connection of the electric vehicle supply equipment, and capable of being locked in the open position.
3) A single disconnecting means shall be permitted to control two or more electric vehicle supply equipment assemblies, supplied by the same branch circuit, provided each electric vehicle supply equipment assembly by itself does not exceed a rating of 60 A.