basic question

[Energize]

I know it is basic, but I cannot find the answer and it is driving me nuts.

On a single line drawing on a print, they show 4 electrical panels side by side. On each panel halfway down, they show a circle with the letters "WH" inside the circle.

I know it is not "Water heater", but I cannot figure out what it means. I have looked at the gerneral notes and the schedule listing the abbrevations, no luck. I thought about "Westinghouse", but that made no sense to me.

Poor explaination, but I would appreciate any help.

Thanks -

 

[480sparky]

Watt-Hour, as in meter.

Edit to add: Put this site in your favorites.

 

[Energize]

Watt-Hour, as in meter.

Edit to add: Put this site in your favorites.

Thank you for both the answer and the link. Just added the link to my favorites. Really appreciate the help!

 

[mikemck]

Excellent site.

I have seen SKRU on several one lines, and could not find out what it stood for. Was driving me crazy....

Thank you very much.