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GFI circuit for Table Saw

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Forum topic by rlamb007 posted 04-30-2012 03:12 PM 1152 views 0 times favorited 9 replies Add to Favorites Watch
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rlamb007

57 posts in 1175 days


04-30-2012 03:12 PM

Topic tags/keywords: gfi table saw unisaw

Hello all,
I am now the proud owner of a 96 model 5hp Delta Unisaw.
It does need some work, but should clean up nicely.

I need to run a dedicated 220 circuit for it, and was wondering if anyone uses GFI when putting these circuits in.
Of course, a GFI would be nice, but the breakers for these are really expensive.

I was wondering if most people use GFI on their table saws? Also does anyone have any pros & cons for GFI (beside $$$) for the circuit breaker?

Thanks everyone.

-Rob in KY


9 replies so far

View Bill White's profile

Bill White

3426 posts in 2598 days


#1 posted 04-30-2012 03:17 PM

GFCI is not often used/required for a TS. Most often used when the recept is in proximity of a water feature (sink, tub, pool, etc.)
Bill

-- bill@magraphics.us

View MedicKen's profile

MedicKen

1599 posts in 2099 days


#2 posted 04-30-2012 03:21 PM

You may be required to install a GFCI if the saw is in the garage. I would check local codes and with an electrician. Here in the Peoples Republik of Kalifornia ANY garage circuit under 7’ MUST be GFCI.

-- My job is to give my kids things to discuss with their therapist....medic20447@gmail.com

View rlamb007's profile

rlamb007

57 posts in 1175 days


#3 posted 04-30-2012 03:37 PM

Thanks Guys…I am leaning towards not installing. The saw will be operated in a dry area, but it will be on unfinished concrete slab floor. Maybe I can install one later, but we all know how that goes.

-Rob in Ky

View Sawkerf's profile

Sawkerf

1730 posts in 1706 days


#4 posted 04-30-2012 05:06 PM

GFI’s are used where proximity to water requires a more sensitive tripping mechanism. Table saws probably don’t need them.

-- Adversity doesn't build character...................it reveals it.

View ChrisK's profile

ChrisK

1115 posts in 1719 days


#5 posted 04-30-2012 05:22 PM

Most areas require GFCI in garages since the floor can get wet. For $80 why not?

-- Chris K

View NathanAllen's profile

NathanAllen

376 posts in 1781 days


#6 posted 04-30-2012 07:32 PM

If in the garage or basement, better to be safe than sorry.

View Grandpa's profile

Grandpa

3107 posts in 1313 days


#7 posted 04-30-2012 08:21 PM

I believe the code says they are required in garages, unfinished basements, on kitchen counters, in bathrooms and withing 15 feet of a pool or spa (this includes whirlpool tubs). I used them in my steel shop with a concrete floor. I don’t think a bare concrete floor makes any difference. A basement is a basement. My bare shop floor looked like a garage to me so I used GFCI except on the 220V. It is not normally used on 220V unless it services a hot tub or something like that. Now with all that said local codes can require something different. Circuits that are for a dedicated appliance do not have to have GFCI. This is something like a refrigerator, freezer, washing machine or a sum pump in a basement. These trip so easily that motors can trip them and or a power outage will often trip one of them. Then you come home after a weekend away to find something green growing inside your refrigerator. Check locally first then proceed from there. I don’t think you will want one on a table saw because of the motor.

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rlamb007

57 posts in 1175 days


#8 posted 04-30-2012 08:33 PM

Well I do plan on wiring the saw directly (No plug) and everything will be contain in sheathing or conduit.
Pricing the Breaker looks like it going to be about ~$120
A little more information – the existing wired 220 outlets done by my electrician when this outside garage building was made were not GFCI. All other wall outlets are protected.

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Grandpa

3107 posts in 1313 days


#9 posted 04-30-2012 08:44 PM

What you have is standard I believe. I am not an electrician but I try to keep up with things that concern me as a home inspector. Not saying I do keep up but those things show up in new homes (old wiring methods). Sometimes electricians don’t keep up with new codes either. Man, now I will get taken to the whipping post.

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