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- Installing a 3ph circuit for a 2 x 6kW fryer in a commercial kitchen, would appreciate a second opinion on my calcs, thanks in advance?
Discuss Looking to install a 3ph supply for 2 x 6kW fryer in a commercial kitchen. in the Commercial Electrical Advice area at ElectriciansForums.net
4mm is capable of 42A installed like this,
Thanks plugs and sparks, the fryer hasn't been purchased yet as I'm told it comes as a single or 3ph option, I done calcs for both but obviously best to install 3ph when you have the option as cable size for single phase comes in at 10mm. So not sure about terminal sizes etc. Could you go into more detail about your proposal please, just interested, thanks again for speedy reply?Haven't look at the calcs but if you can get two ccts in, rather than try and run two off one cct, its always better in the long run.
You can run 2 X 2.5sqmm 4 core terminate on two Rotary isolaters and put on a B16 breaker, almost impossible for that not to work (subject to calcs again. Lol
Biggest issue with a C32 is ELI
Haven't look at the calcs but if you can get two ccts in, rather than try and run two off one cct, its always better in the long run.
You can run 2 X 2.5sqmm 4 core terminate on two Rotary isolaters and put on a B16 breaker, almost impossible for that not to work (subject to calcs again. Lol
Biggest issue with a C32 is ELI
Thanks Ian, point noted, therefore multicore armoured @ 70 C is 33A for a 4mm cable, maybe I will go for the 6mm in that case as that states 42A ref method C. Appreciate your input mate?Do not base the ccc of the cable on 90 degree operating temperature, use the tables for Swa at a 70 degree operating temperature as the mcb and other terminals will not be rated for 90 degrees.
It's the 90C rating mate, but as Ian quite rightly pointed out @70 C it carries 33A on 4mm cable, so possibly will use 6mm. I'm installing it for this piece of equipment on a 32A commando with build in rotary isolator and rcd just in case of future use for something else. Also the DB is a discontinued Crabtree Polestar 125A, hence the reason for the 2 in one socket. CheersIs that the 90C rating or 70C rating?
Also if Ib is 17.3A then surely In would be 20A?
I wondered that too Dave sparks, that's why I politely asked to explain in more detail?How on earth can you connect a single appliance to 2x circuits safely?
It's the 90C rating mate, but as Ian quite rightly pointed out @70 C it carries 33A on 4mm cable, so possibly will use 6mm. I'm installing it for this piece of equipment on a 32A commando with build in rotary isolator and rcd just in case of future use for something else. Also the DB is a discontinued Crabtree Polestar 125A, hence the reason for the 2 in one socket. Cheers
Reply to Looking to install a 3ph supply for 2 x 6kW fryer in a commercial kitchen. in the Commercial Electrical Advice area at ElectriciansForums.net
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