Before installation of a new electrical wiring for calculation of section of a wire it is necessary to learn the maximum size of current. It is possible to determine current in eletrichesky network of the apartment in several ways. In the simplest case it is possible to do even without special measuring devices.
It is required to you
- calculator, ampermeter of alternating current.
Instruction
1. In the first case take and remember readings of the electric counter in the apartment. Include at the same time everything consumers of current including lighting. Wait until there passes hour of time. Once again take of the meter reading. From value of the new indication take away value of the old meter reading of the electric power. Receive as a result quantity of the electric power consumed within an hour. At the same time this value equally in an average (within an hour) to value of power consumption of all devices which are at the same time switched on in the apartment. Divide this value into 220 (average value of tension in network) and receive average (within an hour) the current proceeding in the apartment. This way gives average value of current as not all consumers of current work continuously during this time.
2. Make the list of all at the same time included consumers of current (together with lighting) and put value of its power opposite to each consumer. Summarize these values, divide the received number into 220. The value of current theoretically possible at turning on of all at the same time switched on devices will be result. Minus this way - it is possible, obtaining the overestimated value of current.
3. In the following method, switch off the automatic switch of the counter of the electric power of the apartment, then connect the ampermeter of alternating current consistently in a chain after the automatic switch of the counter of the electric power of the apartment. Turn on the automatic switch. Include everything at the same time included consumers of current together with lighting. Within an hour note on paper the maximum values of current in network of the apartment. After the termination of this period choose the biggest size from the list of the current sizes registered on paper. It will be an indicator of the real force of current proceeding in network of the apartment.