Max height of sub panel

I guess if the 'subpanels' are really being used only as disconnects for each heater they could fit under one of the exceptions. You're description is a bit unclear.
 
I guess if the 'subpanels' are really being used only as disconnects for each heater they could fit under one of the exceptions. You're description is a bit unclear.
I have 2 panels each supplying 2 heaters, 2 breakers in each panel. The panels would be in a different room than the heaters. It doesn't look like my situation fits an exception like "being adjacent to the" (load) ?
 
I have 2 panels each supplying 2 heaters, 2 breakers in each panel. The panels would be in a different room than the heaters. It doesn't look like my situation fits an exception like "being adjacent to the" (load) ?
You are correct and that leaves you with another problem, the local disconnects would be an issue besides the panel heights.
 
The exception reads (emphasis added):
Exception No. 2: Switches and circuit breakers installed adjacent to
motors, appliances, or other equipment that they supply
shall be permitted
to be located higher than 2.0 m (6 ft 7 in.) and to be accessible by
portable means.
So if they want "panels" with breakers that feed the heaters, installed up ADJACENT to the heaters, I would count that as fitting the exception. If they want them in another room (I'm unclear on your messaging in that regard), then no, you would have to be no more than 2.0m off the floor to the HANDLES of the breakers.
 
Is it 6'-6" or 6'-7"
Darn metic system.
It's 6'-7" for the maximum height of a switch or breaker handle in the upper position, when required to be readily accessible. That's 2 meters rounded to the nearest inch.
6'-6" is another height constraint, which is the minimum clear space height needed for working space.
 
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