MEXICOWANDERER wrote:
Methinks you need a Polygraph to interrogate the instrument and verify what you are reading. Never fully trust a solo instrument - too often, a lying meter will play Pinocchio and attempt to drive you nuts. Go with your instincts. A heater operating all night on a mere pittance of ampere hours?
I have a handheld meter and the trimetric so I'm confident in the voltage readings as they match. And the furnace is not running a lot so the 5 amp/hrs seems about right based on previous experience.