Mell What size grounding electrode conductor is required?
4 AWG
A 4 AWG copper conductor meets the requirement for the grounding-electrode conductor where 20 feet or more of ½-inch or larger reinforcing steel embedded in concrete that is in contact with the earth is the grounding electrode.
What size ground wire is needed for a 600 amp service?
Ground Wire Size Table
| Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equipment, Conduit, etc. Not Exceeding (Amperes) | Copper (AWG or kcmil) | Aluminum (AWG or kcmil) |
|---|---|---|
| 300 | 4 | 2 |
| 400 | 3 | 1 |
| 500 | 2 | 1/0 |
| 600 | 1 | 2/0 |
What size ground do I need for 800 amp service?
MIN. SIZE OF EQUIPMENT GROUNDING CONDUCTORS (EGC) for Grounding Raceway & Equipment
| Rating or setting of Automatic Overcurrent Device (OCPD) in Circuit ahead of Equipment [i.e Circuit Breaker]. Not exceeding (Amps) | Size (AWG or kcmil) | |
|---|---|---|
| 500 | 2 | 1/0 |
| 600 | 1 | 2/0 |
| 800 | 1/0 | 3/0 |
| 1000 | 2/0 | 4/0 |
What size grounding electrode conductor do I need for a 400 amp service?
Which NEC table is used for sizing grounding electrode conductors?
| Rating or setting of Automatic Overcurrent Device (OCPD) in Circuit ahead of Equipment [i.e Circuit Breaker]. Not exceeding (Amps) | Size (AWG or kcmil) | |
|---|---|---|
| 100 | 8 | 6 |
| 200 | 6 | 4 |
| 300 | 4 | 2 |
| 400 | 3 | 1 |
What is the minimum grounding electrode conductor size for a 200 amp service?
| GROUNDING ELECTRODE CONDUCTOR SIZING (Table 250.66) | ||
|---|---|---|
| Size of Main Panel | Copper Conductors | Aluminum or Copper-Clad Aluminum |
| 125 Amps | #8 AWG | #6 AWG |
| 150 Amps | #6 AWG | #4 AWG |
| 200 Amps | #4 AWG | #2 AWG |
What is the maximum size copper wire we are required to use as a GEC to a single grounding electrode?
6 AWG
A grounding electrode conductor (GEC) from an electrical service to a ground rod, pipe or plate type electrode is never required to be larger than 6 AWG copper or 4 AWG aluminum unless the GEC continues on from the rod, pipe or plate to connect another electrode that may require a larger GEC such as a concrete encased …
What size ground rod is required for a 200 amp service?
#4
for 200 Amp services, a #4 grounding electrode conductor (ground wire) is required.
How many ground rods are needed for a 400 amp service?
Two ground rods
Two ground rods should be at least 6′ apart. The ground wire should be 1/0 copper with a rod 4 to 6 below grade. It’s possible that the conductors for 400 Amp services are 400 cir.
What is the largest size required for a copper grounding electrode conductor that is connected only to a rod pipe or plate electrode?
How big do grounding conductors have to be for parallel runs?
The equipment grounding conductors for parallel runs do not have to meet the requirement of 310.4 that calls for a minimum 1/0 conductor size, because the equipment grounding conductors in each raceway are full size as required by 250.122.
Which is the largest AWG for grounding electrodes?
Because the Grounding Electrode Conductor is not expected to carry fault current, 3/0 AWG is the largest it ever has to be. Not so with the conductors that are sized from Table 250.102 (C) (1).
How are service, feeder and grounding electrode conductors sized?
Service and feeder conductors supplied by a single-phase, 120/240-volt system shall be sized in accordance with Sections E3603.1.1 through E3603.1.4 and Table 3705.1.
How many paralleled 500 kcmil conductors per phase?
For example, the equivalent area of four ungrounded, paralleled 500 kcmil conductors is 2000 kcmil. 12 ½ percent of 2000 kcmil is 250 kcmil. For a service that uses four paralleled 500 kcmil conductors per phase, the minimum size main bonding jumper is 250 kcmil.