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sizing gutters #77895
07/19/01 09:06 PM
07/19/01 09:06 PM
B
Barry  Offline OP
Junior Member
Joined: Jul 2001
Posts: 5
Danville,ca,USA
Often times my project manager will insist that I use a gutter in lieu of a LB, to save money of course.
My question is how to interpret table(s)
373-6(a) and 373-6(b).If for example I were to enter the end plate of a gutter with 4 250mcm cables and exit through the back wall,I beleive I would use table (a). Would I go to the 4 wires per terminal column and use a 10x10 gutter with a lenght of 6x the conduit size?
Also If I bring my feeders into the top of a panel with lugs on the bottom do I need to use this table to determine if I have enough space to bring my cables down along the side and then bend 180 degrees up to the lugs?
thanks in advance, Barry

2017 / 2014 NEC & Related Books and Study Guides
Re: sizing gutters #77896
07/20/01 08:13 AM
07/20/01 08:13 AM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Barry,
Look at the exception to 373-28(a)(2). It tells you to use the "one wire per terminal" size from Table 373-6(a).
Don(resqcapt19)


Don(resqcapt19)

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