Settle a bet on a roof drain

Some electricians put heat tape on 6" ABS that is run outside for a roof drain. I said they should have put it in the drain not outside of it.

They told me MFG specs are to run it that way. So settle our lunch time bet to see if it will freeze.

In Washington we get down to single digits in the winter. And don't hold above freezing for a month or two atleast.

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