277 Volt single phase water heater on 240 volts

[Birken Vogt]

Wow! Might be a record for "ask me the time and I'll tell you how to build a watch"
I think the OP dropped out about post #14 having solved his problem.

This has been a very characteristic thread for this site.

 

[g-and-h_electric]

I am still here! Was just waiting to see what I heard back at work before chiming back in.

The plumbing crew installed a 40 gal heater on Sunday (who wired it I dont know. I am the only electrician at the shop). Didnt send any info to the plumbing foreman as he had a bit of attitude Saturday night, and I saw no reason to give him any help as he didnt seem to care about the customer, just how much he wasnt making on the job.

Thank you to all for the information! IMHO, I dont always have to be right BUT it sure feels good when I am. I mean I was right in not just changing the feeders and breaker without written info from the heater manufacturer. Btw, that heater company has 1 star reviews online, makes me even happier to have stayed out of it !

Howard

 

[ptonsparky]

I am genuinely curious, running a water-heater in simultaneous mode I have always seen two 25 or 30A breakers, same with electric on demand, some have like four 40A breakers one for each element, but never one 50A for two elements.
They do they eventually trip the breaker when a element goes crusty and bad or do usually people just notice no hot water or?

I've never seen a 50 amp on two elements.
Generally on residential units, you just run out of hot water.

 

[ptonsparky]

Good thing I'm retired. Volt & Amp Data from Fluke 43B. Watts & Resistance derived from that. IDK why we have such a large variation at points 9-14. Element is rated at 115-volt, 200 watts

 

[garbo]

Allegheny Iron & Metal got a lot of the machinery when that plant shut down. Got some VFDs out of there that were as big as the cooler I take camping. Maybe 5 hp rated. Of course that was all pretty high tech stuff 30 years ago

Often wonder what happens to expensive VFD'S when buildings are torn down. I helped wire in most of those drives. Largest were two for 100 HP air handler fans. They now have 20 HP drives smaller by then 5 HP drives made in 1980.

 

[ramsy]

Palm oil and palm kernal oil are a lot different. And not just different pour points.

Amazing.

..he was a hero .. and saved the company a ton of money…15 year old asphalt mixers ran 24/5..

As cynical me be, a good story can still be appreciated.

 

[winnie]

to build three huge chocolate conches. Each had two 100 HP motors on 4' gears to power two Inter winding blades They would run for 8 hours to break down powdery chocolates into liquid chocolates. These machines cost less then a third of ones made in Europe.

Just a smidge larger than this one:


In a case of reuse of inexpensive hardware, a common kitchen appliance in India is a countertop wet grinder, for grains and lentils. There is a small industry using these as home chocolate melangers.

 

[Joethemechanic]

I think these used a granite roller