I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water heater to the electrical panel–it comes up during sales inspections and some owners have spent quite a lot of money to relocate the panel.
In my research I haven't been able to find any such code; the nearest I can find is 110.26(A)(2) which dictates the free space around the panel.
NEC 110.26(A)(2) Width of Working Space.
The width of the working
space in front of the electric equipment shall be the width of the
equipment or 750 mm (30 in.), whichever is greater. In all cases, the
work space shall permit at least a 90 degree opening of equipment
doors or hinged panels.
By that standard the design is up to code, the water heater is just far enough to the side to provide the needed working space.
Is there another code that is specific to the proximity of the water heater?
Best Answer
This is a VERY misinterpreted section of the code, especially by lay people and home inspectors. Most homeowners and likewise simply think a water heater cannot be near a panel, for what reason I don't know.
Basically, the panel can be anywhere in the 30" width working space. There is no mention of center of the panel or otherwise. Meaning, the panel can be at the extreme side of the 30" space as long as the space is clear for 30".
Here is a clear graphic from ©Mike Holt: