audiocableguy
Member
Hello, I need help in determining wire guage for a commercial install. I am not doing the installation, just double checking the Elect. Contractor. The following will need to be in a single conduit, indoors.
X4 NEMA L14-30 (2H+1N+G) 200ft from a 3 Phase panel. Voltage is 208 VAC and each Recepticle has an independant Neutral. Ground is common. Wire is 90deg. THHN. Total: 8H+4N+G (13 cond.) Average Voltage loss is acceptable.
The loads are UPS units which will be loaded to 22 amps 100 percent of the time! Neutrals are included to each for future expansion.
My confusion is the 3 Phases with Neutrals. Would the Neutrals be counted as current carring conductors? 3 Phase + N and it is counted but this this layout is very gray.
Distance loss, conduit fill, amperage and load factor has lead me to believe #6 conductors in 2.5" conduit. Wondering if these numbers are way off or ???
The short form:
(x4) 30 Amp / 208VAC / NEMA L14-30
200 Feet x13 Conductors THHN wire in conduit
100% Load Rating, Avg. Volt Loss,
Thanks for your time, any questions or comments welcome!!
X4 NEMA L14-30 (2H+1N+G) 200ft from a 3 Phase panel. Voltage is 208 VAC and each Recepticle has an independant Neutral. Ground is common. Wire is 90deg. THHN. Total: 8H+4N+G (13 cond.) Average Voltage loss is acceptable.
The loads are UPS units which will be loaded to 22 amps 100 percent of the time! Neutrals are included to each for future expansion.
My confusion is the 3 Phases with Neutrals. Would the Neutrals be counted as current carring conductors? 3 Phase + N and it is counted but this this layout is very gray.
Distance loss, conduit fill, amperage and load factor has lead me to believe #6 conductors in 2.5" conduit. Wondering if these numbers are way off or ???
The short form:
(x4) 30 Amp / 208VAC / NEMA L14-30
200 Feet x13 Conductors THHN wire in conduit
100% Load Rating, Avg. Volt Loss,
Thanks for your time, any questions or comments welcome!!