For large capacity when the power cord risk of short circuit, it is to should know something. Wearing a ring or metal bracelet with the check-in people, should make its hand away from carrying large current technology road, even if only 5 v voltage should also be child like this.
Small section conductor, should not be u don't through the insurance plant or circuit breaker, bridge spans in large cross-section of the conductor. The circuit breaker block capacity, should be greater than in the contact of the branch next circuit breaker jump Yin guangxi road can take before the capacity. The only power in short circuit by building road in distribution transformer by short-circuited to insurance building or circuit breaker jump open circuit reactance of the limit of friends. If insurance Lin working voltage of planting more than rated, or circuit breaker interrupt let and insufficient, are in their "open" later, there are still arc in the above their continued.