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It depends. In a typical US residence with 120/240v single-phase power, the ground wire will be green, the neutral will be white, and the hot conductor will be either black or red depending on which phase it is connected to. Odd numbered breakers (1,3,5, etc.) are black, and even numbered breakers are red. You will measure 120v from black to white, also 120v from red to white, but 240v from black to red. In a commercial building with 3-phase 120/208 power, ground and neutral are the same color, but there are 3 hot colors - black (a-phase) red (b-phase) and blue (c-phase). As you run down a line of breakers from top to bottom they will be wired: black red blue black red blue etc. You will measure 120v from any of the 3 hot colors to white (neutral) but 208v from black to red, red to blue and blue to black.
What else can I help you with?
Why are you not getting 240v between the two hot wires?
Because they are "in-phase". In order to get 240v, you need two 120v Alternating Current lines that are 180° out of phase, that is, opposite phases. Only when one line is +120v and the other -120v will you see 240v between the wires.
How do you discharge a 120V capacitor so it can be safely handled?
Stick a screwdriver between the 2 wires. This discharges the capacitor
How can you connect a system working with 60Hz 1 Hot wire 1 neutral wire and a ground wire to my utility system that works with 60Hz two hot wires and a neutral wire?
Your 2-wire system is actually connected to one "side" of the 3-wire system. In your utility's 3-wire system you have 2 hot wires that are attached to each end of a tranformer winding and the neutral is attached in the middle and grounded. Typically in the US this gives you 240v (or something similar) between hot leads and 120v from each hot lead to neutral or ground.
What is a 100 amp 208 single phase?
That is 20.8 kVa but a 208 v single phase supply is very rare. 208 v is usually three-phase, with 120v between neutral and the live wires.
Can you wire your home with both 120v 60Hz and 230v 50Hz electricity?
No, these are two different distribution systems. The North American system uses 60 Hz and the European system uses 50 Hz.
Which color wire is normally not on a 120v system in an apartment?
Black
Why are you not getting 240v between the two hot wires?
Because they are "in-phase". In order to get 240v, you need two 120v Alternating Current lines that are 180° out of phase, that is, opposite phases. Only when one line is +120v and the other -120v will you see 240v between the wires.
What wire number in a 120v system L2?
In a 120V system, the wire number for L2 would typically be black (or red, blue, or another color designated for a hot wire). However, it is important to consult local electrical codes and standards to ensure compliance and safety.
What is the color assigned to the high leg conductor of a 4-wire delta secondary three phases?
Assuming you are talking about a 120/240v delta system the color coding is as follows. Phase A(120v)-Black Phase B(208v "Wild leg/High phase")-Orange Phase C(120v)-Blue There are other color coding methods but this is the most common.
Can a 120V chandelier be hard-wired to a 240V power source in Europe using 240V bulbs and will the wires handle the load?
as long as the total WATTAGE of the bulbs is the same, you should get the same light and the wires will handle the load just fine.
Why does your 120v 24v reduce to 28v?
It is not typical for a 120V to 24V system to reduce to 28V. The voltage should decrease from 120V to 24V. If you are measuring 28V, there may be an issue with the measurement or the equipment itself. It's important to double-check the connections and equipment to ensure they are functioning properly and as expected.
How do you discharge a 120V capacitor so it can be safely handled?
Stick a screwdriver between the 2 wires. This discharges the capacitor
What is 2 wire plus ground 240V?
With one interpretation of this question, the answer would be two 120V wires and a ground.
How do you hook the 4 wires which are 2 whites 1 red and 1 black coming from the back of a generator to an outlet for 120v and 240v?
The whites are Neutrals or Grounds and the Red and Black are each 120v. One white and either the black or red for 120v and one white, both the red and black for 240v.
What does a transformer between utility wires and your house do?
The transformer steps down the voltage from 600kilo volts which is what is at the power pole/lines to multiple strands of 120v or hot wires which is what your house runs off of.
Can 120v 20w bulb be used in low voltage 12 volt system?
No, a 120V 20W bulb cannot be used in a 12V system. The bulb is designed to operate at 120V, and using it in a 12V system would likely cause it to burn out or malfunction. It is important to use bulbs that are designed for the specific voltage of the system.
What are the key considerations when selecting a 120v thermostat for a residential heating system?
When selecting a 120v thermostat for a residential heating system, key considerations include compatibility with the heating system, ease of installation and use, programmable features for energy efficiency, and reliability of the thermostat brand.
