Utility Service Size - Amps

[CurrentCrusher]

I am hoping to gain some insight on electrical service amps sizes. I understand utility companies have service amps in different sizes like 200amp,400amp, and so on, but I am curious if this changes based on the utility company. if not, how do i know or determine the next size after 400amp for instance after 1200amp is it 1500amp or 1600amp?

Can anyone provide information on the range of available service amp sizes, and whether these sizes vary depending on the utility company? Are there any standard sizes offered by most utility companies, or is it on a case-by-case basis?

I know a lot of people on here have years of experience your input is appreciated, sorry if this is a kind of dumb question.

 

[tom baker]

It would vary by POCO, and if single or three phase. For example my POCO does not allow single phase over 5 hp. Most POCOs will have customer service handbooks and they are useful to have

 

[augie47]

As far as your service gear you can get about any size required but generally speaking: 200-225-400-600-800-1200--1600-2000

 

[tom baker]

And there are standard fuse sizes, such that the same fuse clips will fit different ampacities. You could have a 400 amp fused disconnect with 300 amp fuses, so it’s a 300 amp service

 

[CurrentCrusher]

As far as your service gear you can get about any size required but generally speaking: 200-225-400-600-800-1200--1600-2000

I appreciate your input, all these sizes seem like standard size what follows after 2000 did it jump to 4000 or 3500? also, do you have a chart that I can always reference or a weblink

 

[CurrentCrusher]

It would vary by POCO, and if single or three phase. For example my POCO does not allow single phase over 5 hp. Most POCOs will have customer service handbooks and they are useful to have

Good to know thanks for your input

 

[CurrentCrusher]

And there are standard fuse sizes, such that the same fuse clips will fit different ampacities. You could have a 400 amp fused disconnect with 300 amp fuses, so it’s a 300 amp service.

Thanks

 

[texie]

I am hoping to gain some insight on electrical service amps sizes. I understand utility companies have service amps in different sizes like 200amp,400amp, and so on, but I am curious if this changes based on the utility company. if not, how do i know or determine the next size after 400amp for instance after 1200amp is it 1500amp or 1600amp?

Can anyone provide information on the range of available service amp sizes, and whether these sizes vary depending on the utility company? Are there any standard sizes offered by most utility companies, or is it on a case-by-case basis?

I know a lot of people on here have years of experience your input is appreciated, sorry if this is a kind of dumb question.

There is no standard "size" for most POCOs. You size your service equipment per NEC Art 220 and then they decide what they are going supply in terms of capacity on their side. That said, the POCO will have "standard" available voltages/phases and capacity for a given address. What is available at a given address can vary greatly and may require customer participation (IE $) to provide the service required. For example, I've seen some POCOs not even blink for a 600 amp 1 phase service for a house and others that would have a big issue with that. On the commercial side many POCOs have max capacities they are willing to supply before requiring the customer to buy at primary voltage. My point is there is no standard-it all depends on the address and the POCO.