Distinguishing between line and load isn't always necessary. For example, a conventional wall switch -- which is a single-pole, single-throw switch -- works equally well whether you attach the live circuit wire -- line-- to the top brass terminal or the bottom because the switch has only two positions -- open or closed.The terminal connections are directional on a double-throw switch, on the ....
The terms are used in the context of a single device and electrical box, so that the wires that deliver power into the box are described as the line wires, the upstream wires, or the incoming wires, while the wires passing onward to other devices are described as load, downstream, or outgoing wires. And these terms are relative to the location of the device in the circuit, since the load wire ...
@dissolved Actually they don't, take time to trace out the wiring. A line and a load wire may be in the same junction box depending on where the line (source) conductor comes in and where it is going next, but the schematic for making a multiple 3-way and 4-ways work is always the same. Line coming in on one 3-way and load going out on the other.
Line is the wire going from a current source into a switch. It's upstream of the switched device(s). Line is always hot. Load is the wire going from the switch to the device. Load will only be hot if the switch is closed. I really don't like using...
Ampacity is defined as the measurement of how much electrical current can flow through an electrical wire safely. This ampacity should match the circuit size, meaning the circuit breaker or fuse that protects it.Speaking of that, remember to calculate the circuit load at no more than 80% of the circuit protection.
Total electrical capacity of an electrical service is measured in amperage (amps). In very old homes with knob-and-tube wiring and screw-in fuses, you may find the original electrical service delivers 30 amps.Slightly newer homes (built before 1960) may have 60-amp service. In many homes built after 1960 (or upgraded older homes), 100 amps is the standard service size.
Identifying electrical wiring properly is an important step when replacing a light fixture, installing an outlet or handling other electrical work. The hot and neutral lines should be two distinct colors, but the colors can vary for the different wires. Learn how to identify wires for your safety.
The term wire load is used in the realm of electronics and electrical circuitry. It is a reference used to describe the amount of signal a specific wire is able to withstand having sent through it. The load varies according to the length of the wire, the thickness, or “gauge” of the wire, and the material that specific wire is made from.
What the Color of an Electrical Wire Means Black Electrical Wires. This color of wire is used to transfer power to switches and outlets in all types of circuits. Also, black wires are often used as switch legs in circuits, which is the connection linking a switch to the electrical load. Consider all black wires to be live at all times.
This chart shows both the recommended 80-percent wattage load and the absolute maximum 100-percent wattage load for the most common wire and cable gauge sizes. Tip: Remember: amps = the amount of current a wire can safely carry. Wattage = the rate of electrical energy used by an appliance. Amps x voltage = watts