What Size Aluminum Ground Wire For 200 Amp Service. From internet searches i keep getting mixed answers. What size wire do i need for a 225 amp service?
150 Amp Service Ground Wire Size from needicandy.com
Hello i have purchased 200 ft of 4 4/0 aluminum direct barial wire for the run from my pole barn to my 200 amp service panel. Which states that the grounding electrode shall not be larger than #6 copper. I have always ran #6 and never had any issues with local inspectors but that doesnt always mean it is correct.
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You can also select 4awg aluminum wires or 2awg copper wires. In the nec. there appears to be two tables that contradict each other in regard to the minimum sized equipment grounding conductor.
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If you are in the us. chances are your jurisdiction uses the nec (national electric code) as a guide. 1 article 250 is a foundational pillar of nfpa 70®. national electrical code® (nec®). and the tables within article 250 are critical resources for sizing the wiring for the grounding and bonding of an electrical system.
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You can also use copper conductors of 4awg and aluminum conductors of 2awg. Herein. what size wire do i need for a 200 amp underground service?
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Recently. code has stated that the size of aluminum wire for a 200 amp service entrance must be 250 awg unless a demand load calculation can be completed to prove to the local inspection authority that the 4/0 conductor size does not exceed 185 amps of draw. It often requires a permit and professional installation by a qualified electrician following local electrical codes.
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I have always ran #6 and never had any issues with local inspectors but that doesnt always mean it is correct. Now my issues are that this size wire will not fit the 100 amp sub panel.
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In the nec. there appears to be two tables that contradict each other in regard to the minimum sized equipment grounding conductor. Recently. code has stated that the size of aluminum wire for a 200 amp service entrance must be 250 awg unless a demand load calculation can be completed to prove to the local inspection authority that the 4/0 conductor size does not exceed 185 amps of draw.
Things To Consider Before Buying A Grounding Wire 1).
Minimum size grounding conductor for a 200 amp service entrance is #6 bare copper. Per article 250 of the nec . the minimum size for a grounding conductor for a circuit protected by a 200 amp breaker is #6 copper or #4 aluminum. You need a minimum of #6 ground or #4 aluminum for 200 amps.
This Is Based On Nec ( Nfpa 70速:
The ground conductor size calculator will calculate the proper ground conductor size for grounding raceways and equipment based on ampere rating or setting of automatic overcurrent protection device in circuit ahead of equipment. It often requires a permit and professional installation by a qualified electrician following local electrical codes. When using the aluminum wire. you should consider using the copper fixtures. which are pigtailed onto the aluminum ends.
The Neutral Wire Is Often One Or Two Sizes Smaller Than The Two Hots.
I have always ran #6 and never had any issues with local inspectors but that doesnt always mean it is correct. National electrical code速 (nec速). 2014 edition) table 250.122. To upgrade a 200 amp wire. you can use special fixtures with aluminum.
For 200 Amp Service. You Want A Minimum Of Four Or Six Ground.
Also. what size wire do i need for 200 amp service? A conductor is a wire that is used to carry electrical power. The cable i bought came with an al ground wire but the local service company says it must be copper. so i must replace it.
Now My Issues Are That This Size Wire Will Not Fit The 100 Amp Sub Panel.
You need a minimum of #6 ground or #4 aluminum for 200 amps. You can also use copper conductors of 4awg and aluminum conductors of 2awg. You can also use 6awg copper wire or 4awg aluminum wire.