Hello,
I recently bought an older house, and I have been finding problems with the wiring in the breezeway and garage that was added on in the 80’s. It appears to have been a lot of DIY work that never got inspected properly. The most recent one I have found is with the dryer receptacle. This is a 10-30R (3-wire) receptacle fed from a subpanel. I know that this is not allowed by 2002 NEC, but was the 3-wire receptacle ever allowed when fed from a subpanel? I thought it was only allowed when fed from the main panel, since neutral and ground are bonded together there. I’m just wondering if this may have been allowed by code when it was installed or if it is another example of incorrect wiring. I plan to replace it with a 14-30R, since the cable has 3 conductors plus the ground.
Brian
