speakerhoarder Posted July 9, 2021 Posted July 9, 2021 Hi all, I just purchased an old Marantz EQ 551 which is multi voltage and came with a non polarised American plug. I changed it it am Aussie plug and plug it in via a grounded surge protected adaptor. It works great but I am getting a mild static shock from it. I have tried reversing the wires in the Aussie plug I purchased from Bunnings. I'm still getting a small shock after switching between the Hot/Neutral connections in the plug. The new plug has ground, but of course there's only 2 wires coming from the non polarised output of the EQ. Please help. I've got a multimeter.
LogicprObe Posted July 9, 2021 Posted July 9, 2021 A multimeter will not save you from electrocution. 1
Guest dr_carl Posted July 10, 2021 Posted July 10, 2021 Take it to a licenced professional and stop risking killing yourself.
pcking Posted July 10, 2021 Posted July 10, 2021 Worthwhile checking your RCD in your Electrical Switchboard with a push button test. Good luck. 1
bob_m_54 Posted July 10, 2021 Posted July 10, 2021 Push button test on your RCD really only tests the mechanical action of the RCD. Are you sure it isn't actually static build up on your person that is shorting to ground? Does it happen when you touch the case of any other component in your system? 1
pcking Posted July 10, 2021 Posted July 10, 2021 Yes I know push button is for mechanical test only , but I assume that speaker hoarder wouldn't be able to carry out a proper RCD Injection test, to test for proper RCD function and trip time. It could be just a small amount of Leakage occuring also. It was just a suggestion as if the push button failed it could be addressed. Cheers. 1
audiofeline Posted July 10, 2021 Posted July 10, 2021 Static isn't related to the wiring. If you are building up a static charge (eg. from synthetic carpet), it will discharge to metal (like your hifi or a water tap). If it's not static, then you may have a more serious problem. 1
bob_m_54 Posted July 10, 2021 Posted July 10, 2021 6 minutes ago, audiofeline said: Static isn't related to the wiring. If you are building up a static charge (eg. from synthetic carpet), it will discharge to metal (like your hifi or a water tap). If it's not static, then you may have a more serious problem. yes, hence my questions. Or is that just for clarification of the topic heading? (just rereading)
Guest dr_carl Posted July 10, 2021 Posted July 10, 2021 Guys....electricity is too dangerous to take risks with...do not advise a novice to go poking about ... he is not dealing with static build up from his carpet etc he has rewired a lead connected to the mains. It should be obvious to anyone who completed high school that he needs a electrician.
Pigpen Posted July 10, 2021 Posted July 10, 2021 18 hours ago, speakerhoarder said: Hi all, I just purchased an old Marantz EQ 551 which is multi voltage and came with a non polarised American plug. I changed it it am Aussie plug and plug it in via a grounded surge protected adaptor. It works great but I am getting a mild static shock from it. I have tried reversing the wires in the Aussie plug I purchased from Bunnings. I'm still getting a small shock after switching between the Hot/Neutral connections in the plug. The new plug has ground, but of course there's only 2 wires coming from the non polarised output of the EQ. Please help. I've got a multimeter. Speakerhoarder - as a qualified electrician, an electrical engineer and someone who has been a witness before a coroner for an electrical accident (electrocution obviously as you don’t go to the coroner for an injury that does not result in death) I have some simple advice - do not tamper with electricity or the conductors / plugs that transfer it from supply to appliance if you are not qualified. 3 1 1
Pigpen Posted July 10, 2021 Posted July 10, 2021 36 minutes ago, LogicprObe said: Where'd he go? "smoko"........ 1 3
speakerhoarder Posted July 12, 2021 Author Posted July 12, 2021 (edited) Lol I'm still here guys. Its a non polarised adaptor and the EQ is multi voltage and on the required 240 voltage. Reversing polarities on the plug did the trick and I spoke too soon. Even though it's a/c there seemed to be a mild effect. I don't see a need for RCD test? Thanks for the concern. I'm not the sort to go draining caps on valve amps etc from information I got off the internet. I have a basic certificate in electronics, and whilst I am no guru, I know where I can and can't venture. This was static, not a live chassis. Settle down cowboys *rubs feet on carpet* HOWEVER, check my new post. This EQ seems to work passively? This part is beyond my understanding. Edited July 12, 2021 by speakerhoarder
LogicprObe Posted July 12, 2021 Posted July 12, 2021 On 7/10/2021 at 1:47 AM, speakerhoarder said: Hi all, I just purchased an old Marantz EQ 551 which is multi voltage and came with a non polarised American plug. I changed it it am Aussie plug and plug it in via a grounded surge protected adaptor. It works great but I am getting a mild static shock from it. I have tried reversing the wires in the Aussie plug I purchased from Bunnings. I'm still getting a small shock after switching between the Hot/Neutral connections in the plug. The new plug has ground, but of course there's only 2 wires coming from the non polarised output of the EQ. Please help. I've got a multimeter. That is not what you said the first time.
bob_m_54 Posted July 13, 2021 Posted July 13, 2021 6 hours ago, speakerhoarder said: Even though it's a/c there seemed to be a mild effect. 6 hours ago, speakerhoarder said: This was static, not a live chassis. This is a bit confusing, because static discharge is not AC current. What makes you think it's "a/c" (sic)? As for the RCD test, it's a good idea to do a manual push button test on them every so often anyway. (6mths - 1 year?)
Sub Sonic Posted July 13, 2021 Posted July 13, 2021 Easy way to tell if it’s static or not is does it happen when the equipment is off at the power point. 1
Pigpen Posted July 13, 2021 Posted July 13, 2021 4 hours ago, Sub Sonic said: Easy way to tell if it’s static or not is does it happen when the equipment is off at the power point. If it is unplugged - being "off" at the power point may not necessarily mean it is "off" - incorrect wiring hurts in more ways than one........ 1
Guest dr_carl Posted July 13, 2021 Posted July 13, 2021 1 hour ago, Pigpen said: If it is unplugged - being "off" at the power point may not necessarily mean it is "off" - incorrect wiring hurts in more ways than one........ Yep...yank the plug out first.
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