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I am installing outlets in my patio room. What is the standard height recommended above the ground for these to be installed?

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While there is a "standard height" between 12" and 18" to center (or 16" to the top), I would measure your existing outlets and match them. – Matthew Sep 10 '12 at 23:02
I'd also think about even higher. If I ever build a house, I think most will be a waist/desk height. Just seems odd to always be bending over to plug/unplug everything. ;) – DA01 Sep 10 '12 at 23:18
Lower makes sense for items on the floor, like floor lamps and old cabinet televisions. Today, we're charging phones and laptops on tables. – Jay Bazuzi Sep 11 '12 at 2:49
The standards are designed for the "living room" situation. they have provisions for plugs above counters like in the kitchen as well. per standard every 6' along a wall there should be an outlet unless there is a door and or surface area of the wall is less then 3' I believe. I would have to dig up my rule book to be sure though. afci just got added to the list of requirements to due to pets chewing on power cords etc. – Kendrick Sep 11 '12 at 3:15

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The direct answer to your question is "There is no standard". Outlets can be installed at whatever height is comfortable for the intended use. The only NEC requirement is that you must be within 8 foot of an outlet along any wall. Outlets may no longer be located directly under a window. A common height for a wall outlet is between 12 to 16 inches to the bottom of the device. In rare instances, outlets are still installed in baseboards and in the floor with proper box/covers.

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Floor outlets suck. The covers are often broken or lost, so they fill with dirt. A plugged-in cable will get pinched / badly worn by traffic. But if you need 'em, you need 'em. Ceiling outlets are sometimes an option, too. – Jay Bazuzi Sep 11 '12 at 19:01
(My space is a 30'-diameter room, so I'm never close enough to an outlet!) – Jay Bazuzi Sep 11 '12 at 19:01
floor outlets are ok when they have a metal cover and are recessed but usually end up being a pain as you said. celing outlets are awesome as are using builtin spaces like cabinates etc. – Kendrick Sep 16 '12 at 1:01
interesting.. I had my new room built onto my house 2 years ago to code and the inspectors said no problem if the outlets were underneath the windows. – staticx Sep 17 '12 at 17:22
@shirlock homes, I realize this is a couple of years old now, but there are a couple of issues with your answer. The code reads "so that no point along a wall is no farther than 6' from a receptacle", NOT 8'. So receptacles can be 12' apart. Also, there is NO such prohibition for receptacles under windows. Never has been. – Speedy Petey Jul 27 '14 at 12:13

When I had my new room built onto my house, the electrician used a standard claw hammer for the height. The electrician stated that this is a general rule of thumb that many electricians use. In fact, a simple google search revealed that someone at the forums, recommended a standard 16 oz hammer standing on its end as a reference height. The site recommends using an "electrician's hammer" as the point of reference. A forum post a the DIYChatroom recommends also to use a 16 oz hammer that gets you about 18 inches off the floor.

So, I would use the hammer as a guide.

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I thought "electrician's hammer" was an alternate term for lineman's pliers. – The Photon Sep 18 '12 at 23:53
@ThePhoton: Nope: – staticx Sep 19 '12 at 12:14
"Hammer height" is an OLD electrician's trick for new work. In old work/renovation typically we just match any existing ones. I haven't seen anyone use hammer height in years. – Speedy Petey Jul 27 '14 at 12:15

A hammer length or the front part of a spade is good rough approximation. The exact answer according to the code of practice SANS 10142 states that it must be 500 mm above floor level.

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In what world is this code??? – Speedy Petey Jul 27 '14 at 12:16
A link to the code referenced would be useful. – The Evil Greebo Jul 27 '14 at 12:26
Google says it's the South African code. The most recent complete document I was able to find is from 2009; but Google shows several amendments published since. – Dan Neely Jul 27 '14 at 16:02

There is no code on the height of electrical outlets. You have a standard height of 16" to the top of the outlet box, and a standard height of 48" to the top of the switch box. Then, there are custom heights in which different company use accordingly to the home owner or builder. Spec homes generally get standard height, and custom homes usually get standard height as well, unless other wise specified by the blue print, home owner or builder.

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In the UK, Part P of the Building Regulations 2010 states that for new builds (emphasis mine):

Approved Document M recommends that in new dwellings only, switches and socket-outlets for lighting and other equipment should be between 450mm and 1200mm from finished floor level. Approved Document M does not recommend a height for new consumer units. However, one way of complying with Part M in new dwellings is to mount consumer units so that the switches are between 1350mm and 1450mm above floor level. At this height, the consumer unit is out of reach of young children yet accessible to other people when standing or sitting.

In practice, in areas where there is limited risk, it tends to be the case that unless otherwise specified, a home builder will install light switches at 1.2m above finished floor level, and sockets are at 450mm (approx 18inches) above finished floor level. Isolating switches such as those for a extractor fan for a shower are exempt from those heights (and instead would be installed close to the ceiling level).

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