Garage sub panel

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Posted by: from Airdrie
8/25/2017 at 8:26:00 AM


I'm running electrical 240 v/30 amp to my sub panel in my detached garage. Question - Do I hook my neutral up? I think it should be but just want to confirm. Bare ground is hooked up to equipment ground on both ends. Picture shows sub where neutral would go.


Garage sub panel
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Tyler from Monster Electric in Edmonton
Date/Time8/25/2017 at 10:02:26 AM

Yep, hook it up unless you don't need/want 120v

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Date/Time8/25/2017 at 10:57:41 AM

I would connect the neutral wire up as you don't know what your requirements may be in the future. Without a neutral you'll have no 120 volt capabilities. That means no 120 volt lighting or 120 volt receptacles for power tools.

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Jeff in Airdrie
Date/Time8/25/2017 at 11:10:13 AM

Ok, thanks guys.

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Date/Time8/25/2017 at 1:53:30 PM

Hooked up the neutral for you to have 120v and the most important thing you have to remember to don't forget is to remove the neutral bond to the chassis as this may create issue down the road if you won't.

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Jarrod from JTB Electric Ltd. in Camrose
Date/Time8/25/2017 at 3:20:34 PM

Yes of course you need to hookup the neutral. You'll need to remove the bonding screw tho.

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Date/Time8/25/2017 at 5:04:34 PM

While I am in support of people learning how to complete tasks to ensure that their house is better maintained and essentially adding value; it should be noted that this is not a DIY referral site.

While I don't want to sound like a protectionist (because really I am not), the only advice we should be giving to people on this site is to call an Licenced Electrical Contractor or advising people that if they are doing their own work (which I support), that it needs to be fully compliant with the CEC and a permit must be obtained where required.

Clearly if this poster does not know the requirements regarding the grounded conductor, he likely does not know about bonding screws, mounting heights, mechanical protection, voltage drop, etc.

John Kuehnl-Cadwell

Master Electrician

Datawise Solutions Inc

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Robert from ElecTriLight Ltd. in Oakville
Date/Time8/25/2017 at 7:20:07 PM

I too fear for the installer and the safety of the people using the power connected. (grounding especially in damp areas)

The basics of electrical and a sub panel require grounds, neutrals and live wires. If any of these are overlooked or connected improperly, serious risk of shocks or fire may result.

The countless times I have received a bad shock from removing a ground wire from DIY wiring is seriously a hazard. Neutrals and grounds are very different and should never be combined (except in certain cases) or confused.

.5 amp shock across your heart can be lethal and kill an adult or child. People think grounds and neutrals are not harmful, 100% they are.

At least ask a licensed contractor to come in and inspect your work before turning it on.

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