Wiring for 2ph coffee brewer

Mark1977

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• Sep 23, 2017

• #1

I've been asked to install a coffee brewing machine which has come from the the USA. The plate says 2L/N/PE 230/400v
Any advice on how/if this can be wired into 3ph/1ph supply would be greatly appreciated. Many thanks

 

telectrix

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• Sep 23, 2017

• #2

looking at that, 5600 watts,12.4A indicates a 400V supply, so seems as it needs to be connected across 2 phases of a 3 phase supply.

 

O

Octopus

• Sep 23, 2017

• #3

What supply do you have available?

 

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Mark1977

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• Sep 23, 2017

• #4

Murdoch said:

What supply do you have available?

Click to expand...

3ph supply is available.

 

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Mark1977

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• Sep 23, 2017

• #5

telectrix said:

looking at that, 5600 watts,12.4A indicates a 400V supply, so seems as it needs to be connected across 2 phases of a 3 phase supply.

Click to expand...

I was thinking that would probably be the case but was unsure about the phase offset with regards to 3ph being 120deg and the USA using 2ph at 180deg??

 

Wilko

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• Sep 23, 2017

• #6

Plot thickens ...

 

telectrix

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• Sep 23, 2017

• #7

just a glorified kettle @ 100 x the cost.

 

cliffed

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• Sep 23, 2017

• #8

It’s looks like a 120 v 2 phase supply,not a 240 v

 

KEV 1 N

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• Sep 23, 2017

• #9

Wilko said:

Plot thickens ...

View attachment 38453

Click to expand...

It looks as though it actually needs a 240v supply, not 400v, so looking at the diagram on the right, you would connect live to L1 and neutral to L2, the American system appears to be L1 to N is 120v, L1 to L2 is 240v. That's why the neutral is crossed out. I don't think it needs a 2 phase supply at 400v. Anybody else think that too??

 

KEV 1 N

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• Sep 23, 2017

• #10

Anybody watched Holmes on Homes? It's a Canadian show where people's homes are put right after dodgy builders have done work. From what I've seen, their domestic electrical system is a 2phase and neutral (L1 or L2 - N = 120v, L1 - L2 = 240v) so the 120v is for lights and sockets, 240v is for cookers, dryers, washers.

 

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• Sep 23, 2017

• #11

You had my attention at 'Coffee Brewer' - looks like Kevin is right as the 120v will use the neutral so at our voltage if used will use the neutral and provide the required power to make a nice cup of 'Joe'!

 

Richard Burns

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• Sep 23, 2017

• #12

From this wiring diagram it would appear that the power supply for the control system needs 230V (from L1-N).
There are two 3kW heaters one has a supply from L1 and the other from L2.
Therefore I would suppose that if you have a 230V supply that can handle 30A then you could link the L1 and L2 or if you have two 16A single phase supplies you could share a neutral between them.
For a 400V system it would just be two phases of a three phase supply and a neutral that would work in the same way as the above single phase.
Perhaps.

 

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• Fetco-CBS-2131XTS-1G-xts-coffee-brewer_47.pdf

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Richard Burns

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• Sep 23, 2017

• #13

or as a picture for ease of reference.

 

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• Sep 23, 2017

• #14

Richard Burns said:

From this wiring diagram it would appear that the power supply for the control system needs 230V (from L1-N).
There are two 3kW heaters one has a supply from L1 and the other from L2.

Click to expand...

Agree - until I saw the circuit diag I was thinking to follow the post #6 diagram and put L on one side, N on the other. But if it was wired as per post #6, how would the 24V /5V supply get energised ? (when the heaters were off for example)

 

D

davesparks

• Sep 23, 2017

• #15

Wilko said:

Plot thickens ...

View attachment 38453

Click to expand...

That's the US variant, not the UK model shown in the OP