Will using the 10A port on meter to test transformer cause it to pop?

by | Apr 12, 2024

Questions › Category: Questions › Will using the 10A port on meter to test transformer cause it to pop?
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Handyman Staff asked 4 months ago

I was testing the transformer in my furnace across the COM and 120V terminals when it popped, sparked, and left a burn mark on the COM terminal. Could it be because this nucklehead had the positive lead on the 10A port?