250.102 (C) (1) Note 2

[Andy1845c]

Could someone give me a quick example of how to apply Note #2 of table 250.102 (C) (1)?
I am struggling to get my head around it. :slaphead:

 

[packersparky]

Could someone give me a quick example of how to apply Note #2 of table 250.102 (C) (1)?
I am struggling to get my head around it. :slaphead:

Copper ungrounded conductors and an aluminum bonding jumper. You would have to size the bonding jumper on what size aluminum ungrounded would be needed.

 

[infinity]

For example, if you calculation came up with you needing a 350 kcmil copper bonding jumper and you wanted to use aluminum then according to T310.15(B)(16) you would need a 500 aluminum bonding jumper which has the same ampacity.

 

[Andy1845c]

Thanks guys. I don't know why I was struggling so much with the wording. I was worried there would be a question on my journeymens exam about that. Thankfully there was not