Receptacles must be installed properly; so, for that purpose, They should meet both manufacture’s instruction and also level of power consumption according Electrical code. Wrong installing may ends up to a damage or even a life hazard.
Wires must be connected properly according conditions in Canadian Electrical Code Book and It must be placed in Electrical box and be grounded by grounding system. Leaving electrical connectors unattended is not allowed by rules.
Outdoor receptacles are more exposed to damages. If they are not maintained periodically, they break down the whole power circuit.
Check receptacles regularly before this kind of disaster happens! That’s more often caused by high power consumption appliances such as electrical heaters. Make sure plugs are fit in receptacles.