Some would call this a small workshop, instead of a "shed". I'll just call
it an outbuilding.
To recap other replies,
You will need the 4 wire version if not using a subpanel in the outbuilding.
This will provide grounding, a neutral, and 2 hot wires.
If using a subpanel, you can use the 3 wire version. 4 wire version
recommended depending the distance to the outbuilding. But, you will need a
grounding rod and accompanying bare copper wire from that to the subpanel.
This provides grounding to the subpanel for outbuilding wiring.
Conduit recommended. UV safe PVC shedule 80 okay. Use flexible entryway to
outbuilding for this type. PVC expands/contracts with weather temperatures.
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