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Whats the difference between plumbing pipe threads and conduit pipe threads?
Plumbing pipe threads are squared and conduit pipe threads are tapered.
The calculation used to determine amperage of a conductor based on the total number of conductors in a conduit is called A derating B voltage drop C conduit fill D conductor fill?
derating
What is the difference between overhead transmission line and under ground transmission line?
Um. One is hung above your head on telephone poles and the other is ran underground in conduit? Unless you meant something else? Also burying cable costs ~10 times as much for transmission lines as overhead. It also usually has a lower power carrying capability, since it cannot dissipate heat as readily as an overhead conductor.
How many current carrying conductors can you have in a conduit before you have to start derating amparage?
The number of current-carrying conductors allowed in a conduit before derating is specified by the National Electrical Code (NEC). Generally, if you have more than three conductors in a conduit, you need to start derating the ampacity of the conductors. Specifically, for more than three conductors, the ampacity of each conductor must be reduced based on the number of conductors present. For example, with 4 to 6 conductors, the ampacity is typically reduced to 80%, and with 7 to 9 conductors, it’s reduced to 70%.
What is a sentence using the word conduit?
The small river served as a natural conduit between the lake and the ocean. -ExoMo
Can you have only one current carrying conductor in a conduit?
You can have only one current carrying conductor in a conduit, but that conduit must have a slot to relieve the eddy currents that will be created by the transformer effect created by the conductor. It is better to run the neutral or opposite conductor along with the hot conductor together in the same conduit, or through the same penetration, so as to minimize this effect.
Does the Nec allow grounding electrode conductor to be run in conduit that has other conductors in the conduit and what code section?
No, the bare copper grounding conductor can not be in a conduit with other conductors. It can be in conduit by itself to provide mechanical protection for the wire.
Does the metal conduit count as a ground?
No, each conduit must contain a separate grounding conductor.
What is the difference between thhn and romex?
THHN is a heat resistant thermoplastic insulated conductor, usually a single conductor. Romex is a brand name for a nonmetallic sheathed cable, it has multiple conductors inside, the insulated ones are insulated with THHN insulation.
Whats the difference between plumbing pipe threads and conduit pipe threads?
Plumbing pipe threads are squared and conduit pipe threads are tapered.
What is difference between cleat and conduit wiring?
Cleat wiring is exposed while in conduit wiring the wires are well protected inside tubes/pipes.
The calculation used to determine amperage of a conductor based on the total number of conductors in a conduit is called A derating B voltage drop C conduit fill D conductor fill?
derating
What are synonyms of conductor?
transmitter, wire, channel, conduit, director, pilot
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 does aduequct mean?
Perhaps you mean "aqueduct" a conduit for carrying water.
How do infection rates and renal deterioration compare between conduit and continent techniques?
There is little difference in infection rates or in renal deterioration between the conduit surgical techniques and the continent techniques. The patient's preference becomes important.
What is the difference between overhead transmission line and under ground transmission line?
Um. One is hung above your head on telephone poles and the other is ran underground in conduit? Unless you meant something else? Also burying cable costs ~10 times as much for transmission lines as overhead. It also usually has a lower power carrying capability, since it cannot dissipate heat as readily as an overhead conductor.
