ET107 Weather Station
10
12.
Use a trowel and edger to finish.
13.
Wait 24 hours before removing the concrete form.
14.
Wait seven days before mounting the pole.
5.2.3 AC Power Installation Procedure
The currently-available ac power option includes a 100 to 240 Vac to
24 Vdc power supply (see note below).
The ac power supply option for older ET107 stations included a
120 Vac to 16 Vac step-down transformer instead of the 100 to
240 Vac to 24 Vdc power supply. Appendix
(p. F-1)
, provides information for
installing an ac power system that includes the step-down
transformer.
1.
Mount the power supply inside a user-supplied junction box according to
local electrical codes.
Avoid dangerous electrical accidents by locating the
transformer remotely and burying a low voltage line to the
station. The low voltage will carry up to 500 feet on an
18 AWG power cable.
2.
Shut off 110 Vac power at the main breaker.
3.
Connect the primary leads of the power supply to the 100 to 240 Vac
power source.
4.
Connect a two-conductor cable to the secondary terminals of the power
supply.
5.
Route the cable from the power supply to the ET107 enclosure according
to local electrical codes.
6.
Splice the incoming two-conductor cable to the power cable provided with
the station. Use the direct burial splice kit when splices are in a valve box
or buried.
The splice and wire nut must be completely immersed into
the silicone gel inside the splice tube to be waterproof.
7.
Connect the power plug to the
POWER
connector on the back of the
enclosure (FIGURE
). Ensure that the plug is completely seated on the
connector and the locking ring is turned a quarter revolution clockwise.
NOTE
CAUTION
CAUTION
