Bonding of separte buildings that are physically attached to each other.

[charlie b]

I have a 40 foot long container (like you might see transporting goods via a cargo ship) designed internally as a living unit (bed, table, maybe a sink, etc.). This thing gets its own power panel that is fed from a distribution panel in a separate location. Now I put a second ?containerized living unit? on top of the first unit. It gets a panel of its own. Both panels have feeders (with EGCs) originating from the same distribution panel.

Question: Is there a requirement to ?bond? the two units together in some manner? Reference from article 250?

 

[jap]

Out of curiosity, are the feeders the same size to both containers with the same size EGC's ?

 

[jusme123]

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[jusme123]

read 215.6 (last sentence) , which sends you to 250.32(B), '...the equipment grounding conductor shall be used for the grounding or bonding of equipment, structures, or frames required to be grounded or bonded.