Power Distribution Blocks

[papatimc]

Where in the NEC is a Power Distribution Block covered, or would it fall under article 368 for Busways

 

[chris kennedy]

110.14?........

 

[bphgravity]

Do have a more specific question ???

 

[acrwc10]

110.14?........

Maybe add 110.3(B) :smile:

 

[charlie b]

I am sorry, but I do not know what you mean by "power distribution block." Can you elaborate?

Welcome to the forum.

 

[iwire]

I think he means these.

 

[mpd]

376.56 (B) covers power distribution blocks in a metal wireway, what are you using them for

 

[IMM_Doctor]

Migration away from old PDB to new PDBFS

Migration away from old PDB to new PDBFS

With new codes coming into play, we have been avoiding the open style Power Distribution Blocks, and we are now using ENCLOSED power distribution blocks.

A. Enclosed can give you IP-20 rating for finger-safe (if you put accessory plastic plugs in unused openings)

and

B. Offers HIGH SCCR rating. The older open-style blocks do not have a SCCR rating.

 

[papatimc]

Power Distribution Blocks

Do have a more specific question ???

On a piece of equipment with 2 or more electrical cabinet's. Feeders from the service disconnect to a power dist. blk. on line side. Load side of dist. blk.connects to other load centers & circuit breakers. Basicly using the power dist. blk's as a busway. Would article 368 be used to determine conductor size and length?

 

[don_resqcapt19]

No, Article 368 does not apply. You do not have a busway.

Busway. A grounded metal enclosure containing factory-mounted, bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes.

The load side conductors are tap conductors and 240.21(B) applies.