Answer Jose Cervantes. Engineer General Electric

What cases are electrical surges?
Mainly when placed in a single electrical circuit more than one connection, and that over time can saturate and generate very dangerous consequences for the installation and the site where it is.

How many electrical connections must have at most one point in common?
The electrical capacity depends on the size of conductor and the key that controls that circuit, so this is not how many connections can support but what is your outlet capacity. If unknown, it is best to avoid additional connections. For example, in the kitchen or laundry each artifact, as the washing machine should have a proper outlet, as well as a dedicated circuit for the electrical protection.

What kind of problems bring overload?
A high load or more small drivers can overheat and disrupt the electrical insulation. Also, as a result could short.

How can we prevent them?
The best way is to go from the start what the National Electric Code standards and recommended. This means, among other things, have a network and plugs with grounding, use keys for the automatic differential power to an overload, use circuit breakers (thermal-magnetic keys) in each circuit, plus the protective devices section of each conductor.

What advice when providing maintenance to an electrical system with many connections?
An electrical connection with more than ten years old needs to be reviewed by a qualified electrician to check the good drivers, keys and switches. It is important to note that anyone who does not have minimal training as an electrical technician should refrain from manipulating the circuits, and in the worst case, any manipulation must be performed once these completely disconnected.They should be reviewed to ascertain how the absence of an inductive load that can produce discharges.

Any other recommendations on this?
It is important to avoid contact with damp or wet items. Remember that electricity is always going to think for the item with less electrical resistance, in this case, the human body.