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bob j said:I didn't think an instant hot water heater fell under the heading of continuous load, because it isn't a storage type heater.422.13
I believe that is what infinite is pointing out. :smile:
bob j said:I didn't think an instant hot water heater fell under the heading of continuous load, because it isn't a storage type heater.422.13
Thanks Iwire !!!! I do believe I'm catching on!:smile:iwire said:I believe that is what infinite is pointing out. :smile:
iwire said:I believe that is what infinite is pointing out. :smile:
Let's see how many other examples of when we've needed single 40's we can come up with in this thread.
infinity said:How does the 1.25 factor come into this calculation? Are you considering an insta-hot a continuous load?
422.13 Storage-Type Water Heaters.
A fixed storage-type water heater that has a capacity of 450 L (120 gal) or less shall be considered a continuous load for the purposes of sizing branch circuits.
Dennis Alwon said:I was looking at art. 412.13-- tell me what you think. This is 2008 NEC
422.13 Storage-Type Water Heaters.
A fixed storage-type water heater that has a capacity of 450 L (120 gal) or less shall be considered a continuous load for the purposes of sizing branch circuits.
bob j said:I'm wiring an instant hot type of water heater.
Well I guess I am wrong...:grin:. I thought there was some storage in an instant hot. Seems ridiculous to add 125% but I thought it was necessary. I guess I will stand corrected. Regular 60 gal tanks don't appear to be continuous either....oh well.iwire said:Instant hot types are not storage type.
peter d said:Let's see how many other examples of when we've needed single 40's we can come up with in this thread.
Dennis said:.....Regular 60 gal tanks don't appear to be continuous either....oh well.
M. D. said:Quote:
422.13 Storage-Type Water Heaters.
A fixed storage-type water heater that has a capacity of 450 L (120 gal) or less shall be considered a continuous load for the purposes of sizing branch circuits.
Dennis, isn't 60 gals. storage of water
Dennis Alwon said:Yes according to the code it shall be considered continuous. What I was saying is that a water heater in a home is never on for 3 hours or more. I guess it is possible but highly unlikely.
mdshunk said:Pictorial example of a field-installed point of use water heater disconnect:
I do it that way too. I'm not even sure the picture squares 100% with the code, but nothing to get especially excited about. It was work I lost, and I was there the other day (ice cream store), so I took a cell phone pic.peter d said:Weird. We always hardwired those, and use a heavy duty toggle switch or an EXO disconnect (properly sized of course.).
Depends on how their sized. I've got one on the hand washing sink at the shop in that brand that kicks butt. You can fill up a bucket of steaming hot mop water with it. The one pictured is the one typically used on hand washing sinks, and you're right; they suck.peter d said:FWIW, those EEmax heaters are really lame. You have to keep the faucet opened practically to a trickle to get any decent hot water out of them.
Hold on a minute what if you ran the water for a really long time like you had to give a cow a bath or something and the plumbing leaked?? That could be continuous.Dennis Alwon said:Well I guess I am wrong...:grin:. I thought there was some storage in an instant hot. Seems ridiculous to add 125% but I thought it was necessary. I guess I will stand corrected. Regular 60 gal tanks don't appear to be continuous either....oh well.
mdshunk said:I've got one on the hand washing sink at the shop in that brand that kicks butt.
quogueelectric said:Hold on a minute what if you ran the water for a really long time like you had to give a cow a bath or something and the plumbing leaked?? That could be continuous.