tapping a tap

[qcroanoke]

in other word I am tapping a #4 to a 3/0. Am I allowed by code to tap the #4 with a #12? Both will land in properly sized overcurrent protective devices.
one tap is for a surge arrestor the other is powering a relay.

 

[petersonra]

in other word I am tapping a #4 to a 3/0. Am I allowed by code to tap the #4 with a #12? Both will land in properly sized overcurrent protective devices.
one tap is for a surge arrestor the other is powering a relay.

you cannot tap a tapped conductor.

 

[raider1]

Check out 240.21.

240.21 Location in Circuit. Overcurrent protection shall be
provided in each ungrounded circuit conductor and shall be
located at the point where the conductors receive their supply
except as specified in 240.21(A) through (H).
Conductors supplied under the provisions of 240.21(A) through (H)
shall not supply another conductor except through an overcurrent
protective device meeting the requirements of 240.4.

Chris

 

[qcroanoke]

Check out 240.21.



Chris

Thanks!

 

[raider1]

Thanks!

Your welcome

Chris

 

[david]

Are the 3/0 service entrance conductors.

 

[qcroanoke]

Are the 3/0 service entrance conductors.

No