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220v receptacles installation questions

by noone
posted 09-14-2016 07:48 PM


2 replies so far

View MadMark's profile

MadMark

979 posts in 2014 days


#1 posted 09-14-2016 08:16 PM

Do you have room in your box for an additional breaker?

Do you want GFCI protection?

Do you want to split off a 110VAC circuit (or two) on that same feeder.

Note that the running Amperes is usually a fraction of the peak current so you’ll have plenty of headroom on the Amps.

#8 is overkill for 20’, you can use #10 THHN (indoors) @ 50A without issue.

The original outlet was likely a drier that used the full load as heat, the inductive loads of power tool use much less once they get started.

M

-- Madmark - [email protected] Wiretreefarm.com

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noone

587 posts in 2833 days


#2 posted 09-14-2016 08:43 PM

I don’t have any room in the main panel or the sub panel for an additional 220v circuit. It’s full. This circuit was installed when the house was built as a “General ” 220v outlet (it’s one of the 220v circuits on the right side in the main panel pic with the outlet for it directly beneath the main panel, pic 3). I don’t think I need GFCI protection on a 220v circuit, do I? I have 2 separate 120v circuits, one which has GFCI protection on it for use of my 120v tools.

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