You are watching: 800 amp service ground wire size
I am going to it is in rehabbing one apartment structure service and would choose to number out where in the NEC i can uncover out around the sizing o ground connection for this large of a service. Going to it is in an 800 amp disconnect prior to the meters and also two 4 gang meter stacks. 7 100 amp breakers and also 1 200 amp breaker.
Yeah due to the fact that it"s a large project ns am sending out all the plans come the POCO engineer and also the inspector prior to we also start.
250.24 grounding Service-Supplied Alternating-Current Systems250.28 main Bonding Jumper and also System Bonding Jumper250.50 grounding Electrode System
Never done a organization this big so ns am puzzled with the code. Looks prefer I require a 2/0 GEC and also 1/0 water bond. Company equipment will certainly be three different pieces however they in reality bolt together and the bus makes contact to have actually basically one unit.
Going to be an 800 amp disconnect prior to the meters and two 4 gang meter stacks. 7 100 amp breakers and also 1 200 amp breaker.
Is it simply me, or doesn"t an 800A company seem a bit big for 7 apartments through 100A services (and i assume a 200A house panel?)? I"m simply curious exactly how that worked out.
Is it simply me, or doesn"t one 800A service seem a bit big for 7 apartments v 100A services (and i assume a 200A house panel?)? I"m simply curious how that worked out.
6 apartments 1 house panel and also 1 200 amp pizza shop panel. Residence panel has a 3 washer 3 dryer laundry and heating is all electric in each unit. Current company is 600 amps. House panel may gain an upgrade sometime.
Is it just me, or doesn"t an 800A company seem a bit large for 7 apartments v 100A solutions (and ns assume a 200A residence panel?)? I"m simply curious exactly how that operated out.
If they go not have the pizza shop and also a possible need to upgrade the residence panel to 200 amps as result of upgrades. Along with an all electrical heat building. Ns would save it in ~ 600 yet whole system is aging and also I would favor to change the service planning because that the possible upgrades.
Am i correct the I need a 2/0 to my ground rods and also a 1/0 bond to the water key or am I missing something?
Am ns correct the I require a 2/0 to my ground rods and a 1/0 bond come the water main or to be I absent something?
No bigger than 6cu come ground rod. Water bond would certainly be from 250.66 from size of company conductors. Room you paralleling 500mcm? If so, then 2/0 would certainly be the ideal size
I to be wondering if I might just perform that because it will just be ground connection a few individual services only ascendancy I have to worry about is POCO needs at least #4 because that grounding.
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Am ns correct that I need a 2/0 to my ground rods and a 1/0 bond come the water key or am I missing something?
You perform not require anything larger than 6 awg copper come the ground rods (per the NEC).To price the inquiry of the size of the ground connection electrode conductor to the water friend will have actually to administer the dimension of your business entrance conductors.Depending on your calculated fill you can parallel 500 copper or 700 aluminum because that an 800 amp company disconnect.If you use either of the sizes ns posted 2/0 copper or 4/0 aluminum would certainly be the minimum to the water.Pete
"The difference between a conviction and also a prejudice is the you can describe a conviction without obtaining angry."
No bigger than 6cu to ground rod. Water bond would be native 250.66 from dimension of company conductors. Are you paralleling 500mcm?
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