I've used tray cable many times for temp. repairs in the winter when it would be impossible to pull new wires up here in the cold cruel north otherwise known as Maine . 7 or 9 conductor tray cable, wire tied to a cable, strung from the building to the gas pump canopy, down the canopy pole, out across the island in a pipe, in the side of the dispenser and up comes the pump again . The state of Maine is pretty lenient on temp. fixes
I love tray cable. We even nicknamed it "industrial romex". It's very easy to work with. The cost is not much more than you'd pay for individual stranded conductors.
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. 7 or 9 conductor tray cable, wire tied to a cable, strung from the building to the gas pump canopy, down the canopy pole, out across the island in a pipe, in the side of the dispenser and up comes the pump again 
