So, if there were a short to chassis ground on any of the plugged in devices that voltage would be present on all the devices' chassis. So, the reasoning behind this is making all the usual connections to ground would just be bonding all these outlets (and chassis grounds of all plugged-in devices) together but they are NOT connected to ground. What we are dealing with here is when that can't be done, yet still need to provide protection without ground. If that can be done, then all grounding is done as usual.īeing still more explicit and obvious, yes, it is always best properly update the wiring to use proper cables with ground that are connect at the panel. This other way is to bond to a nearby grounded metal pipe with a single conductor and carry that wire to the box that didn't have a ground wire. To be more clear and complete and avoid confusion there is another, sometimes-possible way to deal with the situation where we have a feed with no ground wire, just hot and neutral. However it made sense to me, but I still went looking for other sources to confirm I did find more. It first struck me as heresy, like that is totally against "thou shall always connect ground". Knight book "Electrical Code Simplified". It's always best to have the outlet grounded, even if only some are.įirst read of this in my P.S. Not sure where you heard that, or the reasoning behind it ?
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