I have a 3 prong 240v outlet for a dryer that reads 240v across both legs and 120 across the ground. When I turn the dryer on and have the multi meter to the ground and a hot leg it shows 120 but if I switch it to the b leg and ground it shows 40 then climbs up slowly to 120. The ground is new and goes to a new ground rod outside as well. I verified it isn't the dryer by plugging it into a different 240v outlet and it works fine. I'm stumped and looking for any help.
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