# How to calculate the energy consumption of an electrical appliance?

**Sommaire de notre article**

- How to calculate the energy consumption of an electrical appliance?
- What is the difference between A+ and à +++?
- Who can receive A+ blood?
- What is the role of an electrical calculation note?
- What is the purpose of an electric note?
- What is Electric Rating?
- What do electrical appliances that are switched off or on standby consume?

### How to calculate the energy consumption of an electrical appliance?

Here is what it gives to estimate a **power consumption** : (Number of hours of operation) x (Number of days of operation) x (Power of the**device** in watts) / 1000. Examples: a 100 cm and 100 watt television is used every day for 3 hours.

### What is the difference between A+ and à +++?

To differentiate them, the product labels mention acronyms **A+**A++, A**+++** or even A++++. Each “+” corresponds to a percentage of additional savings compared to class A. Thus, a class A device**+++** is 30% more energy and water efficient than a class A model.

### Who can receive A+ blood?

Antibodies: Blood group A, all rhesus confused, contains anti-B antibodies therefore the **A+ can receive** red blood cells of blood group O and A **what** whatever the rh. Indeed, rhesus positive recipients **can receive** all rhesus which is not the case for those of rhesus negative.

### What is the role of an electrical calculation note?

What is the role of an electrical calculation note? The purpose of the calculation note is above all to anticipate and analyze the reactions of electrical installations. It aims to calculate the electricity consumption according to the installations in a given space. This can concern a construction site, a house, a building.

### What is the purpose of an electric note?

The purpose of the calculation note is above all to anticipate and analyze the reactions of electrical installations. It aims to calculate the electricity consumption according to the installations in a given space.

### What is Electric Rating?

The purpose of the calculation note is above all to anticipate and analyze the reactions of electrical installations. It aims to calculate the electricity consumption according to the installations in a given space. This can concern a construction site, a house, a building.

### What do electrical appliances that are switched off or on standby consume?

What do electrical appliances that are switched off or on standby consume? Phone chargers, computers, game consoles… All these devices, even when switched off, continue to consume power if they are not disconnected from the mains. Their passive consumption would account for more than 10% of the total bill of a French household.