Secure the pole's anchor bolts and wiring according to the manufacturer's instructions. Mixing different types of metal could corrode the poured concrete, so do not make any substitutions, and make sure the anchor bolts are in the right order to avoid tilting the pole in one direction or another.
Set the pole in place carefully following the manufacturer's instructions for leveling and bolting.
Mix the concrete in the wheelbarrow according the manufacturer's instructions. It is important to use only non-shrinking and non-expanding concrete to ensure the pole's axis will not tilt during the curing process. Pour a foundation in the bottom of the hole dug out for the light pole base. Use the shovel to settle the foundation around the entire base, all the way to the edges of the hole.
Shovel concrete into the void between the lamp pole base and the foundation underneath. Concrete should fill between all of the bolts and nuts at the base. Pack the concrete firmly into place to remove any air bubbles. Continue to fill the base hole with concrete, packing it all the way to the top.
Allow the concrete to dry according the manufacturer's instructions. Do not shift or push the pole during the curing process. Cover the concrete with tarp during extremely hot, wet or humid days.