Electrical wiring installation is a fairly common type of work in the construction and repair industry. This may include laying power cables and group lighting networks, power supply for equipment, outdoor lighting and backlighting, low-current networks, etc.
The estimate will include the entire list of works and costs to be perform: installation of panels, cables, lamps, sockets and switches, equipment, connection of the building to power supply networks, etc.
To prepare a reasonable calculation,
you ne to know many nuances, including understanding how to determine the total cross-section of the cable for the estimate.
The estimate is made according to previously develop instagram data documentation. It is in the project specification and on the plans that information on the cross-section of the cables us is indicat. Cables are select by the designer depending on the power of the consumer devices that will be power by them. In the estimate-normative base, the choice of standards and prices for accounting in estimates of costs for cable installation is carri out depending on the total cross-section of the cable cores.
The calculation of the total cross-section of the cores can be done in to save on wildberries internal advertising ways, since cables have the following characteristics:
Cross-section of multi-core cable
When a multi-core cable is us that does not meet the declar characteristics, is not manufactur according to GOST, undesirable consequences may occur. Moreover, you can find cables on sale, the marking and packaging of which indicate unreliable indicators. The declar cross-section may not correspond to the true figure. It turns out that the core of the cable, purchas taking into account a specific load, cannot cope with the current that it should pass. As a result, the insulation melts. The risk of an emergency, including a short circuit, increases many times over. To prevent this from happening, you ne to know how to determine the cross-section of a multi-core cable.
Features of calculating the cross-section of a single-wire (solid) core
So, you have purchas a cable with a single-wire core and decid to italy numbers its cross-section. To make this possible, you first ne to get a caliper, a calculator, a stripper for removing insulation and a stationery knife. Set the cross-section according to the cable diameter. To do this, do the following.
