mtnelectrical
Senior Member
- Location
- Essex, New Jersey
When using ground rods as a grounding electrodes, how do you size the conductor to use?
When the designer specifies them, if they so choose or when it is a "pipe" electrode. See below:and when are 3/4" ground rods required?
so I does no matter the size of the service. Even a 400 amps , only requires a #6 wire, right?
so I does no matter the size of the service. Even a 400 amps , only requires a #6 wire, right?
Table 250.66
Well lets not actually call them exceptions fella... *grin*...we on that panel like to call them permitted applications inlieu of the general rule.Actually its section 250.66, as the section gives exemptions to the sizes in Table 250.66, take a look at 250.66(A) for your answer
Well lets not actually call them exceptions fella... *grin*...we on that panel like to call them permitted applications inlieu of the general rule.
Paul W. Abernathy
Electrical Code Academy, Inc.
CMP #5 and #17
Snap...never thought of them that way. My appologiesFor the record he called them exemptions.
My bad Tom....sorry fellaActually its section 250.66, as the section gives exemptions to the sizes in Table 250.66, take a look at 250.66(A) for your answer