Main bonding jumper

[hhsting]

NEC 2014 section 250.28(A) main bonding jumper can be bus or wire. NEC 2014 section 250.28(D)(1) main bonding jumper size shall not be smaller than table 250.102(C)(1).

Two questions:


1. Table 250.102(C)(1) does not say how to size main bonding jumper if it’s factory installed bus? Anyone know

2. Can the factory installed bus be aluminum? Anyone know if Aluminum is corrosion resistant according to NEC 2014 Section 250.28(A)?

 

[augie47]

1. If it's factory installed/supplied you don't need to worry. It was part of the listing process.
2. http://www.conways.co.za/pdf/afsa_corrosion_pocket_guide.pdf