I am adding a standby generator to my house and have a question
about mounting the auto transfer switch.
Here is the background, my power enters overhead down a 2"
rigid metal conduit into a meter base from there it continues down
into a second box with a 200A main breaker service disconnect
in it, then it enters a PVC conduit that continues
to the ground and runs underground into the house and to the
circuit breaker distribution panel.
I am putting in a ASCO 200A auto transfer switch in a NEMA 3R enclosure.

Now for the question. The easiest place to mount the switch will be
under the main disconnect (just cut the PVC conduit and mount the switch
inline).
If I do this, the conduit will exit the transfer switch box at 6" to 9"
above ground level. Can the top of the conduit and the bottom of the
switch box be this close to the ground???
If this won't fly I'll have a few more questions.
Dave in Tucson

From: Dave Morrison


I am adding a standby generator to my house and have a question
about mounting the auto transfer switch.
Here is the background, my power enters overhead down a 2"
rigid metal conduit into a meter base from there it continues down
into a second box with a 200A main breaker service disconnect
in it, then it enters a PVC conduit that continues
to the ground and runs underground into the house and to the
circuit breaker distribution panel.
I am putting in a ASCO 200A auto transfer switch in a NEMA 3R enclosure.

Now for the question. The easiest place to mount the switch will be
under the main disconnect (just cut the PVC conduit and mount the switch
inline).
If I do this, the conduit will exit the transfer switch box at 6" to 9"
above ground level. Can the top of the conduit and the bottom of the
switch box be this close to the ground???
If this won't fly I'll have a few more questions.
Dave in Tucson

I don't think it will fly.

(c) Wiring Design and Location. Emergency wiring circuits shall be designed and
located to minimize the hazards that might cause failure due to flooding, fire,
icing, vandalism, and other adverse conditions.

Dave, why not put a 3R trough, like 6x6x36inch directly under the main
disconnect and nipple the transfer switch out of the trough at one side or
the other of the disconnect
"Dave Morrison" wrote in message
...
I am adding a standby generator to my house and have a question
about mounting the auto transfer switch.
Here is the background, my power enters overhead down a 2"
rigid metal conduit into a meter base from there it continues down
into a second box with a 200A main breaker service disconnect
in it, then it enters a PVC conduit that continues
to the ground and runs underground into the house and to the
circuit breaker distribution panel.
I am putting in a ASCO 200A auto transfer switch in a NEMA 3R enclosure.

Now for the question. The easiest place to mount the switch will be under
the main disconnect (just cut the PVC conduit and mount the switch
inline).
If I do this, the conduit will exit the transfer switch box at 6" to 9"
above ground level. Can the top of the conduit and the bottom of the
switch box be this close to the ground???
If this won't fly I'll have a few more questions.
Dave in Tucson