What Size Copper Ground For 200 Amp Service
Select ampere rating or setting of automatic overcurrent device in circuit ahead of equipment not exceeding.
What size copper ground for 200 amp service. From the meter base run 2 black and one white to combination panel with main disconnect. Neutral lug is bonded to ground bar in 200 a combination panel. The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f.
A 165 to 200 amp fuse is used on the service entrance wire at the main. 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. I ve run 0 4 al cable conductors from the weather head to the meter socket and then to the breaker panel.
System is properly grounded. Wire conductor material wire size awg or kcmil copper aluminum note. In the nec there appears to be two tables that contradict each other in regard to the minimum sized equipment grounding conductor.
Enter the information below to calculate the appropriate ground conductor size. Always comply with nec when equipment grounding conductor should be sized larger than the values listed in. Ground wire size calculator.
Wire size chart and maximum amp ratings. What size ground cable do i need to use for my 200 amp service. Answer for usa canada and countries running a 60 hertz supply service cec states that a 3 bare copper conductor is a common grounding conductor size for a 200 amp service panel and it is the.
Two inch conduits are used to hold the copper and aluminum wires for 200 amp electrical service. In addition a 4 bare copper conductor is used for the connection between the ground rod plate and the neutral connection block of the distribution panel for a 200 amp service. The conductor connected to a metal water pipe or whatever your primary grounding electrode is is required to be.
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