What is the difference between micro shock and gross current shock?

What is the difference between micro shock and gross current shock?

In the case of gross shock, the current flows through the body of the subject. In the case of micro current shock, the current passes directly through the heart wall. Gross shock is experienced by the person by an accidental contact with the electrical wiring at any point on the surface of the body.

What is micro shock sensitivity?

thermal hazard a hazard in which electric current causes undesired thermal effects shock hazard when electric current passes through a person short circuit also known as a “short,” a low-resistance path between terminals of a voltage source microshock sensitive a condition in which a person’s skin resistance is …

What do you mean by Macroshock?

Macroshock (mak´ro-shok″) is a medical term for the effects of body exposed to electrical current, which can lead to severe injury or death by electrocution. In general, the greater the current, the more dangerous a shock is and the more likely it is to be lethal.

What causes microshock?

A major cause of microshock is a leakage current, i.e. a small current passing between circuits or to earth because of incomplete insulation and which would normally be harmless via surface contact. Such currents may flow in the equipment casing and in earth and patient connections.

What is the micro shock current level?

The minimum acceptable microshock current is less than 10 µA. Current flow sufficient for injury can occur in part because the circuits involved in microshock are typically low resistance.

What are the precautions to avoid micro shock?

To prevent shock, it is advisable to keep work areas, equipment, and clothing dry at all times. Fix water leaks immediately. Make sure that you are well insulated. Wear dry gloves, rubber-soled shoes, or stand on a dry board or platform.

How do you prevent Microshocks?

1. this is where procedures are performed within or near the heart -> protection from microshock is required.
2. examples: intracardiac pacing electrodes, intracardiac ECG electrodes, intracardiac catheters.
3. equipotential earthing, RCD’s and line isolation monitors used.

What is meant by leakage current?

Leakage current is the current that flows through the protective ground conductor to ground. In the absence of a grounding connection, it is the current that could flow from any conductive part or the surface of non-conductive parts to ground if a conductive path was available (such as a human body).

What is the maximum harmless current via a Macroshock for a human being?

The internationally accepted 50/60 Hz safety current limit for an applied part to the heart is therefore 10 μA in normal mode, and 50 μA under single fault condition (e.g., if the patient by insulation defects is in contact with mains voltage).

What are the two major hazards of electricity?

There are two known hazards of electricity—thermal and shock. A thermal hazard is one where excessive electric power causes undesired thermal effects, such as starting a fire in the wall of a house. A shock hazard occurs when electric current passes through a person.

What are the factors that can reduce danger in case of an electric shock?

You can reduce the risk of electric shock in your home by taking a few precautions, including:

• Always hire a licensed electrician for all wiring jobs.
• Don’t use extension leads or appliances if the cords are damaged or frayed.
• Don’t remove a plug from a power point by pulling on the cord – pull the plug instead.

What are leakage fluxes and mutual fluxes?

In a transformer, both primary and secondary currents produce flux. The flux Ф which links both the windings is the useful flux and is called mutual flux. The flux such as Ф1 or Ф2 which links only one winding is called leakage flux, shown below.