Dryer Plug Sub Panel Help

Hi everyone I just move to a new place and Im about to set up my room. My dryer plug is a 3 prong outlet and my sub panel is a 4 prong male plug. I was wondering if I could install a ground rod in my backyard to bring in a ground to my sub panel ?

please electricity is a serious fire hazard in this hobby and I dont want to burn down my house or kill my family so do not reply to this thread unless you are an electrician. sorry if I sound like a dick but there is so many people that like to spread misinformation on electrical grow rooms.

Thank you and happy growing

Are you planning on using any 110v plugs on your subpanel?

If the answer is no, you can simply rewire the plug from your subpanel. The 4th wire (the one missing from your new outlet) is a neutral. 220v doesn't use the neutral, therefor you don't need it. The neutral an ground should be jointed in a sub panel anyways. So, if you want to use that panel, with the existing wiring, you can't run any equipment on 110v through the dryer. If you have to use it for 110, rewiring the dryer outlet with a neutral is your only option.

I will be running my ballast at 220v and my ac at 110v. I think but not sure (i'm not an electrician)by US NEC code a sub panel has to have a separate neutral and ground bar. They are jointed in a main panel.

Mont@n@ said:

I will be running my ballast at 220v and my ac and fans at 110v. I think but not sure (im not a electrician)by US NEC code a sub panel has to have a separate neutral and ground bar. They are jointed in a main panel.
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Should have spell checked that. It was meant to say shouldn't. So yes, your right. They are bonded in the main panel.

You can go to a hardware store and by the 3 prong dryer cord and attach it to your subpanel, but you can not run 110v from the subpanel at that point.

Or rewire the dryer plug to the 4 prong that you already have on subpanel which would mean redoing all the wiring through the walls.

I can't rewire is a rental so I guess i'm stuck with 220v. What about using a grounding rod? behind of that outlet is my backyard. I was thinking to install one and bring in a ground to the sub panel. Sorry if my question sound stupid but better safe than sorry.

thanks

Mont@n@ said:

I can't rewire is a rental so I guess i'm stuck with 220v. What about using a grounding rod? behind of that outlet is my backyard. I was thinking to install one and bring in a ground to the sub panel. Sorry if my question sound stupid but better safe than sorry.

thanks

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Your subpanel must be grounded to your main panel. No need for another ground rod.

Carolina Dream'n said:

Your subpanel must be grounded to your main panel. No need for another ground rod.

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thanks