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can I connect my thermocouples directly to 208vac line to line?

Question asked by henryspc on Aug 8, 2017
Latest reply on Aug 25, 2017 by tomc

we are trying to measure the wire temperature of a 208V line to line device while its actively pulling current. I want to connect 2 thermocouples, one to each AC line. configuration is line to line, no neutral so 208vac across each leg. I am using an Agilent 34901A 20ch multiplexer card. the data sheet states it has isolated inputs up to 300v but I want to know is anybody else has done this before? I don't want to smoke a $1000 board. see attached drawing

Thanks for your help.

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