Sorry, I am naive to electric engineering but this makes me nervous.
I have two Reel to Reel both plugged into the same surge protector. One is 2 prong ungrounded and another is 3 prong grounded. I've been used it like this for almost a year and never had a problem. However, over the weekend I happened to find that there is a 115v AC difference between the two units' metal case, even without powering on ! I was so surprise that there is electric flow on the case (am I right?) and, but, I was never been hurt by it.
Is this normal? Or something indeed wrong? I tried different surge protector and different outlet. The same thing AC voltage still measured. But I can still touch the case without feeling anything ( only touch one at a time, never touched both together)
Sorry if this is a stupid question, but I am just nervous now.
I have two Reel to Reel both plugged into the same surge protector. One is 2 prong ungrounded and another is 3 prong grounded. I've been used it like this for almost a year and never had a problem. However, over the weekend I happened to find that there is a 115v AC difference between the two units' metal case, even without powering on ! I was so surprise that there is electric flow on the case (am I right?) and, but, I was never been hurt by it.
Is this normal? Or something indeed wrong? I tried different surge protector and different outlet. The same thing AC voltage still measured. But I can still touch the case without feeling anything ( only touch one at a time, never touched both together)
Sorry if this is a stupid question, but I am just nervous now.