Coffee Pot Question

[etbtsi]

On a job we're bidding to include installing a commercial bunn coffee maker, and I want to double check my work. This is in a commercial office setting and the customer already has the equipment. In sizing the circuit, would this fall under "thermostatically controlled kitchen equipment" and would not be considered continuous? Name plate on machine says 120/240 @ 17.1A, 4100W and manual calls for 20A. Would this fall under 220.56 and therefore I could supply with 12/3 MC to a single L14-30 receptacle?

 

[Dennis Alwon]

What's the voltage at the site. 208V or 240V. Either way a 12/3 should work

 

[jumper]

In sizing the circuit, would this fall under "thermostatically controlled kitchen equipment" and would not be considered continuous?

Yes.

 

[iwire]

20 amp breaker, 20 amp branch circuit, 20 amp receptacle and a 20 amp plug.

 

[etbtsi]

What's the voltage at the site. 208V or 240V. Either way a 12/3 should work

240V


Thank you all for the quick replies!

 

[infinity]

20 amp breaker, 20 amp branch circuit, 20 amp receptacle and a 20 amp plug.

 

[ceb58]

20 amp breaker, 20 amp branch circuit, 20 amp receptacle and a 20 amp plug.

20 ounce cup

 

[bward]

Now be careful not to spill any coffee - don't want to have to consider it a wet location.

 

[jumper]

Now be careful not to spill any coffee - don't want to have to consider it a wet location.

 

[MarineTech]

In addition to what has already been said:

EGC sized to 250.122 and the use of 60 degree column (unspecified device terminal rating), and data in spec sheet

http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet66

12/3 copper with 12 AWG copper EGC.

Critical branch circuit length for voltage drop 240 VAC 3% = 107 ft one way.

 

[jumper]

Critical branch circuit length for voltage drop 240 VAC 3% = 107 ft one way.

Critical?:?

 

[MarineTech]

Critical?:?

Yup, poor choice of words, should have used something like recommended.

 

[qcroanoke]

Critical?:?

Depends on wether or not you've had your morning coffee.

 

[iwire]

Critical branch circuit length for voltage drop 240 VAC 3% = 107 ft one way.

These units are designed for either 240 or 208 so voltage drop is not really an issue.

Here are some specs.

http://www.bunn.com/pdfs/specsheets/a11.pdf#search="Cwtf35"

 

[MarineTech]

These units are designed for either 240 or 208 so voltage drop is not really an issue.

Here are some specs.

http://www.bunn.com/pdfs/specsheets/a11.pdf#search="Cwtf35"

Just for fun I thought I would included the branch circuit 3% VD length for 240 VAC.

Thanks,

MarineTech

 

[rt66electric]

ALWAYS ON despite OFF switch

ALWAYS ON despite OFF switch

Those fancy BUNN makers Have a built-in reserve tank. They are always ON and HOT in order to provide "instant hot water. Remember this when trouble shooting a commercial kitchen " I turn it off, and ,the toaster still trips."

 

[MarineTech]

Those fancy BUNN makers Have a built-in reserve tank. They are always ON and HOT in order to provide "instant hot water. Remember this when trouble shooting a commercial kitchen " I turn it off, and ,the toaster still trips."

I thought about this myself while watching how a restaurant used their Bunn coffee maker(s). During peak hours, it looks like the coffee pot is heating/brewing non-stop, for hours at a time. Perhaps, it may be better to size conductors per a continuous load when the equipment duty cycle gets above 90%.

Best regards,

MarineTech

 

[iwire]

Do you see any need to increase the wire size?

 

[iwire]

Those fancy BUNN makers Have a built-in reserve tank. They are always ON and HOT in order to provide "instant hot water.

They are not 'always on' the tank is controlled by a thermostat.

 

[kwired]

Those fancy BUNN makers Have a built-in reserve tank. They are always ON and HOT in order to provide "instant hot water. Remember this when trouble shooting a commercial kitchen " I turn it off, and ,the toaster still trips."

They are not 'always on' the tank is controlled by a thermostat.

And when the tank reaches the set temp it turns off. If they were always on it would eventually boil the water, and by boil I mean we would have high pressure steam start developing in there, if it were not used fast enough.