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MegaThink
Active Contributor

Join Date: Aug 2011
Posts: 12

Grounding

08/26/2011 1:35 PM

hi guys

for 300 Amp system what type, diameter and number required for grounding rod (according to CSA code)or NEC.is there any useful table may used in future?

i will appreciate any comment........thank you
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KJK/USA
Guru
United States - Member - Member Engineering Fields - Electrical Engineering - Electrical Construction

Join Date: Apr 2010
Location: Mid Western USA - The Corn Belt
Posts: 1439
Good Answers: 58
#1

Re: Grounding

08/26/2011 2:05 PM

Is this for service entrance or equipment load?

Here is a ground conductor calculator link:

Link

You can reference:

NEC - Table 250-66 and NEC - Table 250-122

Here is another great calculator

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MegaThink
Active Contributor

Join Date: Aug 2011
Posts: 12
#5
In reply to #1

Re: Grounding

08/28/2011 3:24 AM

thanks and any thing about rod?
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MegaThink
Active Contributor

Join Date: Aug 2011
Posts: 12
#6
In reply to #1

Re: Grounding

08/28/2011 9:25 PM

thanx
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North of 60
Guru
Canada - Member - If there is a way to screw someting up, there is someone to do so! Safety - Hazmat - New Member

Join Date: Mar 2007
Location: Iqaluit, NU. Canada
Posts: 1854
Good Answers: 140
#2

Re: Grounding

08/26/2011 2:20 PM

With your last question... I took the time and the bother to write up a full detailed response, that you never bothered to take the time to respond to.

So... this time, here is my response to this question.

Look at... CSA C22.2 No. 41.

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MegaThink
Active Contributor

Join Date: Aug 2011
Posts: 12
#4
In reply to #2

Re: Grounding

08/28/2011 3:22 AM

Well,i have a bad feeling write now ,and would say thank you ,but i want you to know that i was so busy last couple weeks as i had just few hours for sleeping and that's it, and didn't want to be miscreant with you cause you deserve an appreciation ,so.....thank you
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wareagle
Guru
United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#3

Re: Grounding

08/26/2011 6:12 PM
Table 250.122 Minimum Size Equipment Grounding

Conductors for Grounding Raceway and Equipment

Rating or Setting of

Automatic Overcurrent

Device in Circuit Ahead of

Equipment, Conduit, etc.,

Not Exceeding (Amperes)

 Size (AWG or kcmil)
Copper Aluminum or

Copper-Clad

Aluminum*

15 14 12
20 12 10
60 10 8
100 8 6
200 6 4
300 4 2
400 3 1
500 2 1/0
600 1 2/0
800 1/0 3/0
1000 2/0 4/0
1200 3/0 250
1600 4/0 350
2000 250 400
2500 350 600
3000 400 600
4000 500 750
5000 700 1200
6000 800 1200
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KJK/USA (1); MegaThink (3); North of 60 (1); wareagle (1)

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