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tahreem
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· 09/25/2020 4:05 AM
https://smallespre
sso.com/blogs/news
/8-best-portable-e
spresso-maker-2020

tahreem
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· 09/25/2020 4:00 AM
Portable Coffee Maker for car

Koffee Kosmo
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· 08/28/2020 7:15 PM
I have updated my signature and added links to the KKTO roaster build

snwcmpr
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· 08/16/2020 8:12 AM
I will say, it only happened once, briefly, to me.

NetriX
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· 08/16/2020 7:57 AM
I was blocked too, our hosting provider is dropping the ball lately. thumbdown

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Question on 50 amp 120 volt circuits
coffeeroastersclub
Hello. I am thinking about designing an infrared roaster that will need a 50 amp 120 volt circuit. I refrain from 220 volt as I have no experience in wiring such and frankly it is over my comfort level. Does anyone here have any experience in the plug end I would need? Outlet required? Any other particulars that I should be aware of?

Thanks,
Len
"If this is coffee, please bring me some tea but if this is tea, please bring me some coffee." ~Abraham Lincoln
 
http://www.coffeeroastersclub.com
renatoa
How many tons are you intending to roast if planing to use 6kW ? BBQ grill
IR, if directly on beans, is the most economical roast method I know... I am using 900W to bring 600 grams into FC in 10 minutes.
DIY: TO based IR 750g
Moded commercial: Dieckmann RoestMeister, Nesco, popcorn.
TC4ESP, PID controllers, MS6514 USB/Artisan/Apps
Grinder: MBK Feldgrind, mod'ed Porlex to 47 conical burrs, vintage PeDe Dienes, Kinu M38
Gaggia Mini, Aeropress, drip
 
koffeegrounds
50 AMP , 120 V ? unless this is wired straight to the panel , you do not have any wire in your walls capable of handling this load . 220V is the only way your getting this load.
 
renatoa
Even in EU, the standard house is wired for 16 Amps at 230V.
For more than 17A = 4kW, you should apply for 380V triphasic circuit.
 
coffeeroastersclub

Quote

renatoa wrote:

How many tons are you intending to roast if planing to use 6kW ? BBQ grill
IR, if directly on beans, is the most economical roast method I know... I am using 900W to bring 600 grams into FC in 10 minutes.


Capacity would be 20 lb. green. How many watts do you think then to roast?

Len
"If this is coffee, please bring me some tea but if this is tea, please bring me some coffee." ~Abraham Lincoln
 
http://www.coffeeroastersclub.com
coffeeroastersclub

Quote

koffeegrounds wrote:

50 AMP , 120 V ? unless this is wired straight to the panel , you do not have any wire in your walls capable of handling this load . 220V is the only way your getting this load.


It would be wired straight to panel dedicated circuit.
Len
"If this is coffee, please bring me some tea but if this is tea, please bring me some coffee." ~Abraham Lincoln
 
http://www.coffeeroastersclub.com
renatoa
"Recreational vehicles having a power- supply assembly rated 50 amperes as permitted by Section 18-27-551.42(d) shall have a 3-pole, 4-wire, grounding-type attachment plug rated 50 amperes, 125/250 volts, conforming to the configuration shown in Figure 18-27-551.46(c)."

chicagocode.org/downloads/2015-11-18/images/0-0-0-347.jpg

https://chicagocode.org/18-27-551.46/

And you need about AWG8 wiring.
 
allenb

Quote

coffeeroastersclub wrote:

Quote

renatoa wrote:

How many tons are you intending to roast if planing to use 6kW ? BBQ grill
IR, if directly on beans, is the most economical roast method I know... I am using 900W to bring 600 grams into FC in 10 minutes.


Capacity would be 20 lb. green. How many watts do you think then to roast?

Len


Hi Len,

Sounds like an interesting project. I've not heard of many infrared to bean projects over around 5 lb capacity.

As mentioned by renatoa, direct to bean IR is very efficient and I'm guessing it follows the typical economy of scale in needing less KW/lb as you move up in batch size.
In looking over the Digirosto pro 2500 specs which is a halogen lamp based all-IR design, they're utilizing 6.4 KW for 5 lb batch so I would guess you would be safe in planning on 15 to 20 KW

http://www.buykorea.org/product-detai...75652.html

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
renatoa

Quote

coffeeroastersclub wrote:

Capacity would be 20 lb. green. How many watts do you think then to roast?

Len


I would look for gas.
 
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