jcs8285
New member
- Location
- Oregon, USA
What is, if any the required height of a average 42 in high 200 amp panel? Max height around six feet or what?
There is a requirement for the maximum height of an operating handle from the floor, I think it is 7'6", but I could be wrong. It's so that an average height person does not have to use a stool or ladder to reach it, defined as something like a 5'6" person with a 2' reach. I know where I can access that info, I just don't have it here. I'll check and post later. Also if there is a chance of flooding it's a good idea to keep electrical equipment off the floor, but I don't think that has a regulation associated with it, just good common sense.
Okay Pedro, help me out here, what are the Mobile home portions of article 550 in the NEC for?mobile homes are'nt regulated by nec,
A little dyslexia here....6'7"
It used to be 6'6". I think it was either 2002 or 2005 when it changed to 6'7". I think the change was mostly because 6'7" is also 2.0 meters (or very darn close).
And yes, the height is to center of operating mechanism of the highest device in the panel. The cabinet itself could be much higher and often is on higher amperage equipment just so there is room for wire bending within the cabinet.
I agree with Kwired in respect to max. height, but regarding min. height the only thing I recall is in the flood zone all device boxes most be min. 18" off the floor and I belive that would be for panels too.
mobile homes are'nt regulated by nec, but by hud requirements. maximum height of switches (breakers, etc) is 6 feet 7 inches, per 404.8 nec, 2008. not aware of a "minimum height off the floor, however, as previously posted, rain, flooding come into play, and accessability, i prefer to work on my feet, and being tall, standing is preferable to kneeling, especially on things like panelboards, however, if the situation requires otherwise, one must adapt
The distribution equipment, either circuit
breaker or fused type, shall be located a minimum of
600 mm (24 in.) from the bottom of such equipment to the
floor level of the mobile home.
(d) The distribution equipment, either circuit breaker or fused type, shall be located a minimum of 24 inches from the bottom of such equipment to the floor level of the manufactured home.
Eh, it was a SWAG. What's 11" between friends.A little dyslexia here....6'7"
It used to be 6'6". I think it was either 2002 or 2005 when it changed to 6'7". I think the change was mostly because 6'7" is also 2.0 meters (or very darn close).
And yes, the height is to center of operating mechanism of the highest device in the panel. The cabinet itself could be much higher and often is on higher amperage equipment just so there is room for wire bending within the cabinet.
20 years ago I worked for a mfr who's MCCs were designed such that the top most handle ended up 1/2" too high in the On position. So we had to ship every one with a "free" thick rubber mat to go in front of it. We were told to sell it as a safety feature. Looks like they would have eventually prevailed had they survived.
Eh, it was a SWAG. What's 11" between friends.
Oh wait...
:ashamed:
I agree with Kwired in respect to max. height, but regarding min. height the only thing I recall is in the flood zone all device boxes most be min. 18" off the floor and I belive that would be for panels too.
Good point. Additionally, panel equipment installations and device boxes are required to be 18" above the garage floor to avoid vapor ignition. UPC 1310(a), IRC M1307.3 vapor
They are not required to be above 18".
They are required to comply with Art 500-517 if they are below 18" and the area below 18" is classified.
500-517 is not very specific. What section are you reading?