is it possable? i told them no, they made me do it anyway.
think modular/or closed construction type of building.
170 feet of #4/3 so under the gooseneck of the trailer hooked to a 3 phase disconect modified
to single phase. this feeder supply is of temp. nature but here's the catch it will supply 480v single phase and or 120v single phase. from the disconnect that has 60a fuses. to a double pole double throw manual transfer switch.this is where it gets interesting. up on the trans sw sends 480v single phase to a 15kw transformer(that produces no nutural) then on to the only 120v panel on board the trailer.no type of protection
other than the 60a fuses. now flip the transfer switch down then you feed straight to the same 120v panel as above.
we electricans in the shop decided to size the wire according to the transformer input and output
the main breaker on the only panel is a 60a
but we are still concerned as to where our nutural
will be dirived from when this system is in 480v opperation. oh yeah they also wanted it all wired in so cable like the other 3. but i forgot
and they got rigid/thhn/liquidtight.art.400.
but then friday i found out that this would be heading to an industrial chemical plant????
i need lots of ammo. will take all the help i can get. thanks
think modular/or closed construction type of building.
170 feet of #4/3 so under the gooseneck of the trailer hooked to a 3 phase disconect modified
to single phase. this feeder supply is of temp. nature but here's the catch it will supply 480v single phase and or 120v single phase. from the disconnect that has 60a fuses. to a double pole double throw manual transfer switch.this is where it gets interesting. up on the trans sw sends 480v single phase to a 15kw transformer(that produces no nutural) then on to the only 120v panel on board the trailer.no type of protection
other than the 60a fuses. now flip the transfer switch down then you feed straight to the same 120v panel as above.
we electricans in the shop decided to size the wire according to the transformer input and output
the main breaker on the only panel is a 60a
but we are still concerned as to where our nutural
will be dirived from when this system is in 480v opperation. oh yeah they also wanted it all wired in so cable like the other 3. but i forgot
and they got rigid/thhn/liquidtight.art.400.
but then friday i found out that this would be heading to an industrial chemical plant????
i need lots of ammo. will take all the help i can get. thanks