enireh
Senior Member
- Location
- Canyon Lake,TX
if I'm told I need a 60 kw service, does that mean I need a 250 amp service? What is the formula?
60,000 / 240? or 60,000 / 120?
60,000 / 240? or 60,000 / 120?
if I'm told I need a 60 kw service, does that mean I need a 250 amp service? What is the formula?
60,000 / 240? or 60,000 / 120?
...
Also wanted to point out a unit error in an earlier post. Amps were indicated where volts should have been. That is, 60000 W / 240 V = 250 A, not 60000 W / 240 A = 250 A. Same applies to the remainder of the examples in the earlier post.
I = P/V
I would like to ask the members not to question the members about their qualifications. If you have a question then report the post and have one of the mods look at it. When you all question the member you tend to scare them off and no need for that. We don't know the circumstances of the question and we all had to learn at some point. Thanks
Maybe in some areas. I have seen many single phase POCO transformers supplying single phase service that are 75, 100 and even 167 kVA.60kW is really on the upper limit of what
utilities like to serve as single phase. The
excellent post above showing the different
amperages at certain available supply voltages
shows this question could be more satisfactorily
answered by what it is going to be used for.
Transformer ratings are given in kVA and phase
configuration so the "amps" @ 60kW could have
a few different, yet true answers.
Maybe the poster could clarify the situation, and get
an answer that can be both relevant now and help
understanding if this scenario comes up in a future.
Peace
JR
To all forum members, I am formally requesting that you no longer publicly question new members qualifications for posting here.
Keep in mind that all new member posts have already been approved by a forum moderator before they show up on the forum.
If you feel a new member is over their head please exercise one of two options.
1) Notify one of the Moderators, I suggest you send a PM to one of us with a description of the problem you see with a post. We will gladly discuss it with you.
2) Do nothing, ignore the post and move on.
The reasons for this should be self evident, we are going to chase away new members if they feel they have to justify their qualifications with the entire membership at large.
Not to mention many times it is just plain rude.
Bob
2007 Chief Moderator Mike Holt Forum
Actually we find ourselves calculating in VA for quite a few general purpose and lighting load calculations and then converting that to amps depending on voltage and number of phases.I don't think I have ever heard a service size described as being a certain kW before.
The NEC has a procedure embedded in it for calculating what size service is needed. It always ends up in Amps.
Actually we find ourselves calculating in VA for quite a few general purpose and lighting load calculations and then converting that to amps depending on voltage and number of phases.