A-Assuming the lamp has the usual brass socket that has been more or less standard in floor and table lamps for many years, all you have to do is change the existing lamp socket (with its built-in switch) for a new one that has a three-position switch and will accept a three-way bulb.
You can rewire a lamp easily by yourself. The process is simple and requires you to cut the old cord from the root and replace it with a new one. The replacement process shouldn’t take long.
Touch the bulb at the bottom of the socket with the other lead. Record the reading. If it’s somewhere close to 120 volts, the fixture is good. If you get a reading of zero or one significantly less than 100 volts, the fixture is bad.
Tip. The fixture still works if you reverse the wires, but the socket sleeve will be hot, and anyone who touches it while changing a bulb can get a shock. When wired correctly, the socket sleeve is neutral and only the small metal tab at the base of the socket is hot.
The plug contains three wires – the live, neutral and earth wires. In a plug, the live wire (brown) and the neutral wire (blue) are the two wires that form the complete circuit with a household appliance. The earth wire (green and yellow) does not normally form part of the circuit and is included as a safety wire.
If your house has two prong outlets with metal boxes, it is possible you can ground your outlets without overhauling the wiring. To find out whether the metal housing is grounded, purchase a circuit tester. Insert one of the tester’s prongs into the hot slot (the shorter slot in the outlet).
With a 3-way bulb, if it isn’t working at all, it’s probably dead. … If both elements don’t come on there, replace the bulb. If you have a 3-way bulb that works as it should in a good 3-way socket, and only one of the two elements works in a different socket, the problem is with the socket.
As with the light bulbs, three-stage lamps operate with three power settings that generate three light intensity levels. … Therefore, the lamp skips the first level—low or high depending on the design—and turns on the light when you set it to medium, hence the two clicks.
Depending on the age of the lamp, you may have to bring in new wires too. This is because different bulbs may have different wiring systems and if the existing system does not perfectly fit in then you will have to rewire your antique lamp as well. Electrical faults do and can occur at any given time.
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