I have just bought a new induction hob that has 2 cables - one to be connected to 32 Amp and one to 16A supply. Does anyone have any experience of this? Should I run 2 cables to this or just connect the lot on one 45A MCB?
Hob 10.8kw 2 cables
- Thread starter MikeyO
- Start date
If the instructions state that two supplies, one 16A and one 32A, are required, then that answers your question. I haven't come across a hob like this before, so can't tell you why it requires two supplies.
While you could run two radial circuits back to the CU each with their own breakers, it does pose a problem for local isolation, as you would require a single 4-pole isolator or two double pole isolators.
A more aesthetically pleasing solution may be to run a 45A radial as you suggest, bring this into a DP isolator, and then onto a small distribution board (perhaps a CU designed for the garage). If you fit two appropriately rated MCBs and mount the CU somewhere accessible but out of sight in the vicinity of the oven then you can have one isolator but two correctly protected supplies.
While you could run two radial circuits back to the CU each with their own breakers, it does pose a problem for local isolation, as you would require a single 4-pole isolator or two double pole isolators.
A more aesthetically pleasing solution may be to run a 45A radial as you suggest, bring this into a DP isolator, and then onto a small distribution board (perhaps a CU designed for the garage). If you fit two appropriately rated MCBs and mount the CU somewhere accessible but out of sight in the vicinity of the oven then you can have one isolator but two correctly protected supplies.
Thanks for your reply.
I've not come across it before. I'd run a 6mm radial cable to a DP isolator ready for the hob but then opened the box and found 2 cables.
Access is easy as I'd laid plenty of conduit plastic tubes under the floor to allow for flexibility so I've now added a 2.5mm radial and can add another DP isolator alongside the existing 6mm. Aesthetics is no problem. The radials lead direct to what will be a new CU and can go into separate MCBs.
My option is to swap out the existing 6mm and run a 10mm in place to the single DP switch then to join the 2 leads from the hob into this same DP switch.
The cable config, I understand, is to permit the unit being wired into continental supplies where 3-phase is common practice. It's us in the UK who seem to be behind the pace on 3-phase for domestic applications.
Thanks again.
I've not come across it before. I'd run a 6mm radial cable to a DP isolator ready for the hob but then opened the box and found 2 cables.
Access is easy as I'd laid plenty of conduit plastic tubes under the floor to allow for flexibility so I've now added a 2.5mm radial and can add another DP isolator alongside the existing 6mm. Aesthetics is no problem. The radials lead direct to what will be a new CU and can go into separate MCBs.
My option is to swap out the existing 6mm and run a 10mm in place to the single DP switch then to join the 2 leads from the hob into this same DP switch.
The cable config, I understand, is to permit the unit being wired into continental supplies where 3-phase is common practice. It's us in the UK who seem to be behind the pace on 3-phase for domestic applications.
Thanks again.
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