Nice article. The only omission I see is that he's stated that for equipment bonding jumpers where the phase conductors are larger than 1100 kcmil they require an EBJ of 12.5%, and that's true. But it's likely that parallel raceways will be used so the EBJ in each raceway can be sized according to the conductors within the raceway. Each raceway would not require a 12.5% EBJ.
Equipment Bonding Jumper
The equipment bonding jumper (EBJ) is an effective ground-fault current path installed between the source enclosure (often a transformer) and the first system overcurrent device enclosure (often a panelboard or switchboard). Where the raceway installed between two enclosures qualifies as an equipment grounding conductor based on 250.118, a wire-type EBJ is not necessary. However, when a wire-type EBJ is installed?in flexible metal conduit for example?it is sized according to 250.102(C), which requires use of Table 250.66 or the 12.5 percent rule just as it does for the system bonding jumper.
