Hey guys, I'm looking to run electrical to a barn 180' from a 200A feed through panel I have installed on my house now (shown in pic). I was planning on a 150A main breaker panel in the barn but then I got to wondering if it needs to match the feed thru breaker (200A) or if the barn breaker is simply a shut-off regardless of the size? In sizing the wiring to the barn am I sizing for the main breaker at the barn or the breaker at the feed thru panel supplying the barn? Seems to me it would be sized for the potential 200A from the feed thru. The pic shows the feed thru panel fed from the meter box and with another circuit wired in from below. The barn will be in-coming to the lower lugs. Thanks for the help.
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200A feedthru panel to 150A sub panel
- Thread starter Awac457
- Start date
the breaker in the sub panel is just considered a disconnect switch. it doesn't have to match the feed
wyliesdiesels
Well-known member
that would be considered an outside tap so wire doesnt need to match the 200a breaker. breaker in sub is just a disconnect and it doesnt need to match either.
what loads will you have in the barn?
what loads will you have in the barn?
alfredeneuman
Well-known member
(5) Outside Taps of Unlimited Length. Where the conductors
are located outside of a building or structure, except at the
point of load termination, and comply with all of the following
conditions:
(1) The tap conductors are protected from physical damage
in an approved manner.
(2) The tap conductors terminate at a single circuit breaker
or a single set of fuses that limits the load to the ampacity
of the tap conductors. This single overcurrent device shall
be permitted to supply any number of additional overcurrent
devices on its load side.
(3) The overcurrent device for the tap conductors is an integral
part of a disconnecting means or shall be located
immediately adjacent thereto.
(4) The disconnecting means for the tap conductors is installed
at a readily accessible location complying with one of
the following:
a. Outside of a building or structure
b. Inside, nearest the point of entrance of the tap
conductors
c. Where installed in accordance with 230.6, nearest the
point of entrance of the tap conductors
are located outside of a building or structure, except at the
point of load termination, and comply with all of the following
conditions:
(1) The tap conductors are protected from physical damage
in an approved manner.
(2) The tap conductors terminate at a single circuit breaker
or a single set of fuses that limits the load to the ampacity
of the tap conductors. This single overcurrent device shall
be permitted to supply any number of additional overcurrent
devices on its load side.
(3) The overcurrent device for the tap conductors is an integral
part of a disconnecting means or shall be located
immediately adjacent thereto.
(4) The disconnecting means for the tap conductors is installed
at a readily accessible location complying with one of
the following:
a. Outside of a building or structure
b. Inside, nearest the point of entrance of the tap
conductors
c. Where installed in accordance with 230.6, nearest the
point of entrance of the tap conductors
Thank you for all the input. The plan for the barn is two-fold with half being a woodworking shop while the other half being a spot to work on vehicles. This will only be a one-man show so I don't expect too many loads going at the same time. I would consider a mini-split for the woodwork side along with a complement of wood working tools including a 2hp table saw. Likely a 60gal air comp to serve both sides. Future plans would incorporate a welder and vehicle lift. Would provide for lighting throughout. I may come from the barn, in the future, to a nearby equipment shed for lighting and a welder plug-in. May be overkill but I figured 150A with several slots would give me some flexibility. Am I way off base here? What cable do you recommend for this scenario if it is direct burial between the house and barn? With this being an outside tap is the barn panel still a subpanel requiring a 4 wire cable run to it and the neutral/ground separated from one another?