The 80% rule provides a safety margin, preventing circuits from operating at or near their maximum capacity for prolonged duration. This reduces the risk of overheating, damage to wiring, equipment failure, and even electrical fires.
Heavy-Duty Construction: NEMA 14-50 plugs and outlets are built with durable materials, often including impact-resistant thermoplastic and corrosion-resistant galvanized steel mounting straps, according to Amazon.com. They typically have heavy-duty brass contacts for excellent conductivity, minimizing the risk of failures caused by poor contact.
To achieve the maximum 48-amp output, a 60-amp circuit breaker is recommended. However, the Wall Connector can function with lower amperage breakers, with the output adjusting accordingly. For example, a 50-amp breaker will allow for a 40-amp output. It is important to note that the charging current will always be 80% of the breaker size.
Installing any EV charger in a parking garage or residential home requires permits and inspections to ensure safety and compliance with building codes.