400 amp service 3 ph 120/240 b ph high leg

[kwired]

No, it isn’t. Look at #16

I understand what you are saying about open delta systems, what I was saying is POCO I am most familiar with still won't as a general rule put over 50 kVA units pole top for a full delta or full wye system. They want a padmount if that large of a source is needed. I have seen them hang single 75 for single phase services a few times, but won't go over 50 for multiple unit applications.

 

[Hv&Lv]

I understand what you are saying about open delta systems, what I was saying is POCO I am most familiar with still won't as a general rule put over 50 kVA units pole top for a full delta or full wye system. They want a padmount if that large of a source is needed. I have seen them hang single 75 for single phase services a few times, but won't go over 50 for multiple unit applications.

Somewhere here I have a chart of allowed pole weights at 8’ down..
edit: found it..


.

 

[hillbilly1]

What I have seen when they do large pole mounts, is two poles close together with a platform between them to set the transformers on.

 

[Hv&Lv]

What I have seen when they do large pole mounts, is two poles close together with a platform between them to set the transformers on.

Yes. Called a platform bank. We generally build them for 450kVA and above, but only when a padmounts not an option.
As kwired mentioned earlier, a pad mount unit on a larger bank is easier all the way around.

 

[tortuga]

Ah interesting, I very rarely see overhead services on anything anymore unless its in the old parts of town.
Nothing new construction is overhead around here, even out in the sticks or in the old parts.
I kinda miss overhead work.

 

[hillbilly1]

I’ve done more overhead services this year, than I’ve done the past 10 years! LOL!