becuse if the subway don't have conductor how will check the speed
Without conductors, electrons do not flow where you want them to flow. An electrical circuit is a flow of electrons.
All the metals need not be conductors
To avoid or to attract the electricity
The number of current-carrying conductors allowed in a conduit before derating is specified by the National Electrical Code (NEC). Generally, if you have more than three conductors in a conduit, you need to start derating the ampacity of the conductors. Specifically, for more than three conductors, the ampacity of each conductor must be reduced based on the number of conductors present. For example, with 4 to 6 conductors, the ampacity is typically reduced to 80%, and with 7 to 9 conductors, it’s reduced to 70%.
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The possessive form of "conductors" is "conductors'." This indicates that something belongs to multiple conductors. For example, you might say, "The conductors' uniforms were freshly pressed."
Heat, electric current, or foreign ideology. Whatever you need to insulate against.
They are Conductors, not much for insulation though. Differences between conductors and insulators? Conductors let energy such as electricity .
Yes, but they're not 'phase' conductors, they're 'line' conductors.
Best way is to use a clamp on amp meter. You need to be able to put the clamp over a single conductor. This is usually easy to do in the electric panel, but for a device you need to split the conductors. You can take an extension cord you don't need and separate the conductors so you can get the clamp on a single conductor.
Common conductors found around the house include copper wiring in electrical outlets, metal pots and pans for cooking, and metal doorknobs. These materials allow electricity or heat to flow easily through them.
Ampacity must be derated depending on the number of conductors and the ambient temperature. In the Canadian Electrical Code Table 5C denotes derating for the number of conductors. 1-3 conductors = 100% load 4-6 conductors = 80% 7-24 conductors = 70% 25-42 conductors = 60% 43 or more conductors = 50%