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parallel feeders in same raceway | Mike Holt's Forum
https://forums.mikeholt.com/threads/parallel-feeders-in-same-raceway.51510/
If they are in the same conduit, they get derated (from the 90C value) to 464 amps (80%). A single 500 has an ampacity of 380. So there is an advantage in the ampacity. I can't tell you anything about advantages, one way or the other, in the matter of labor effort to install or cost of materials. iwire Moderator Staff member Location Massachusetts
Can you put parallel feeders in the same conduit?
https://findanyanswer.com/can-you-put-parallel-feeders-in-the-same-conduit
Parallel conductors are often installed where large ampacity feeders or services are used. All of the paralleled conductors in each phase, neutral or grounded set must be the same length and be made from the same conductor material. They must be the same circular mil area and have the same type of insulation.
Parallel feeders | Electrician Talk
https://www.electriciantalk.com/threads/parallel-feeders.26250/
AWG shall be permitted to be run in parallel to supply control power to indicating instruments, contactors, relays, solenoids, and similar control devices, or for frequencies of 360 Hz and higher, provided all of the following apply: (a) They are contained within the same raceway or cable. (b) The ampacity of each individual conductor is sufficient
Parallel Lives: EGCs for parallel runs - Electrical …
https://www.ecmag.com/section/codes-standards/parallel-lives-egcs-parallel-runs
The raceways enclosing conductors of a parallel arrangement must have the same physical characteristics in accordance with 310.10 (H) (3). EGCs in parallel arrangements must also be installed in parallel, and each has to be sized using 250.122, based on the rating of the fuse or breaker protecting the entire parallel set.
Parallel Feeders In One Conduit | Mike Holt's Forum
https://forums.mikeholt.com/threads/parallel-feeders-in-one-conduit.119567/
There is no requirement to run separate conduits for parallel sets, as long as you account for all applicable derate rules. Generally, you'll need 1 larger size of wire than you would for 2 individual parallel sets, if you choose to use a common conduit. Parallel 250's = 510 A in separate conduits, or 464 A in the same conduit.
366.20 Conductors Connected in Parallel.
https://www.electricallicenserenewal.com/Electrical-Continuing-Education-Courses/NEC-Content.php?sectionID=297.0
In order to install conductors in parallel, the paralleled conductors in each phase, polarity, neutral, grounded circuit conductor, equipment grounding conductor, or equipment bonding jumper must comply with all of the following: (1) Be the same length. (2) Consist of the same conductor material. (3) Be the same size in circular mil area.
Conductors Connected in Parallel: Each Set Must Have …
https://www.ecmag.com/section/codes-standards/conductors-connected-parallel-each-set-must-have-same-electrical
Where paralleled conductors are run in separate raceways or cables, the raceways or cables must have the same physical characteristics. For example, if there are four 500 kcmil conductors in a paralleled set of phase conductors, the four separate raceways enclosing the conductors must be all rigid steel, all IMC, or all PVC, etc.
Can you run parallel conductors in the same conduit?
https://askinglot.com/can-you-run-parallel-conductors-in-the-same-conduit
Beside this, how do you run a parallel conductor? All of the paralleled conductors in each phase, neutral or grounded set must be the same length and be made from the same conductor material. They must be the same circular mil area and have the same type of insulation. Finally, all parallel conductors must be terminated in the same manner.
Parallel feeder neutral - Electrician Talk
https://www.electriciantalk.com/threads/parallel-feeder-neutral.1831/
(A) Feeders with Common Neutral. Up to three sets of 3-wire feeders or two sets of 4-wire or 5-wire feeders shall be permitted to utilize a common neutral. (B) In …
Do you have to derate parallel conductors? - AskingLot.com
https://askinglot.com/do-you-have-to-derate-parallel-conductors
Even though Section 310-4 says that conductors in parallel can be considered as one conductor, the last sentence in Section 310-4 plainly says that conductors in parallel shall comply with the derating rules in Section 310-15 (b) (2) (a). 12 current-carrying conductors in a 1-inch raceway, you would derate to 50 percent. Click to see full answer.
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