![]() Most heavy-duty instruments include manuals that recommend an appropriate gauge. The greater the amperage of the application, the higher the gauge. Therefore, you must select the correct wire size to protect your home. Heavy-duty applications are dangerous because the electricity they use is significant enough to melt the wires and start a fire. The more amps a device uses, the higher the gauge you need to accommodate its operations. In other words, their classification comes from a high amperage.Īnd as you now know, the amps influence the wire size. Heavy-duty appliances are called so because they have higher electrical requirements than conventional devices. Yes, the size of the wire will change with heavy-duty applications. The system voltage only matters to the thickness of the insulation. ![]() However, for the most part, your wire size selection will depend on the current the conductors are supposed to carry. Some online calculators will ask you to specify the phase before they can calculate the wire size. You can also look for a sticker or nameplate with the information you need. Three or four wires signify a three-phase system. You identify the phase you have by looking at the number of wires coming out of the meter in the panel.
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