What Size Equipment Ground For 200 Amp Service
What size ground cable do i need to use for my 200 amp service.
What size equipment ground for 200 amp service. Two inch conduits are used to hold the copper and aluminum wires for 200 amp electrical service. Ground wire size table source. 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 ground wire should go to one of the ground bars in the 200 amp panel not to the neutral bar since they are available. Look in the distribution panel for the neutral bus bar. 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.
Nec requires a minimum of 100 amp 3 wire service for a single family dwelling unit. This is where the service neutral white wire is connected to the. Rating or setting of automatic overcurrent device ocpd in circuit ahead of equipment i e circuit breaker.
National electrical code nec 2014 edition table 250 122. This is based on nec nfpa 70. I ve run 0 4 al cable conductors from the weather head to the meter socket and then to the breaker panel.
Nfpa 70 national electrical code table 250 95 rating or setting of automatic overcurrent device in circuit ahead of equipment conduit etc. I never recommend removing the factory strap because it will cut your neutral holes in half. Not exceeding amps size awg or kcmil.
You might need two ground rods at your meter main depending on your local requirements as this is your main service. Size of equipment grounding conductors egc for grounding raceway equipment.
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