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FranFor a 4-wire setup including three phase conductors and one ground conductor, a common choice is to use a 1-inch conduit to ensure proper spacing and easy installation. However, it's always advisable to consult local electrical codes and regulations to determine the appropriate conduit size for your specific application.
Answer for USA, Canada and countries running a 60 Hz supply service.
It really depends on what type if insulation on the wire you are using and what type of conduit you are using. But, using the most common insulation in use today, THHN, and using the most common conduit in use today, EMT, you need 1 inch trade size (27mm) conduit.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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What size conduit do you need to install a 0000 wire?
For a 0000 (4/0) wire, you would typically need a 2-inch conduit based on standard industry guidelines for safe and efficient wire installation. Always consult local electrical codes to ensure compliance with regulations in your area.
Is it permitted to use flexible conduit over 6 feet in length as a grounding means?
No. The new electrical code change does not allow any flexible conduit to be used as a ground means. It is now required to have a green ground wire pulled into the conduit with the other conductors in the flexible conduit. This grounded bonding conductor is not counted as wire fill when calculating the size of the flexible conduit to use
When do you derate wires in conduit I know the code says more than 3 current carrying conductors but is there a length of conduit run when you should start to derate?
In general, you should start to derate when you have more than 3 current carrying conductors in a conduit. The length of the conduit run itself does not determine when you should derate. Stick to the guidelines provided in the electrical code for derating calculations to ensure safe and compliant installations.
What size conduit for 400amps?
The sizing of conduit systems that wire has to be pulled into is dependant on the physical size of the conductor being drawn into the conduit. The second governing factor is the conductor count of the specific conductor that is needed. A 500 MCM copper conductor with an insulation factor of 90 degrees C is rated at 430 amps. This is where the conductor count is need by the service, as to whether the service is single or three phase. In this specific case, the electrical code will allow both single and three phase installations to use the same size conduit. A maximum total of four 500 MCM conductors can be drawn into a 78 mm diameter conduit.
What size pipe for awg 4?
A 4 AWG wire diameter is about 0.2043 inches. For this wire size, a pipe with a diameter of at least 0.5 inches (1/2 inch) would be suitable to provide ample space for the wire to pass through without being compressed or damaged.
