Is my Bosch mains cable up to the job or should I play safe and use larger?

Always learnin · Sep 23, 2020

I know I shouldn't doubt a company like Bosch but some reassurance or suggestions from anyone here would help ease my mind.

We've purchased a Bosch induction hob (Model Number PIE651BB1E/17) it comes with a 5 core flexible mains cable about 2 metres in length. I'm ok with the wiring aspect of the 5 core cable as the instructions are perfectly clear. Each cable appears to be 1.5mm sq (this is printed on the cable sheath - Deja HO5V2V2-F 5G 1.50mm TS EN 50525-2-11). The wiring is basically 2 live (brown and black) and 2 negatives (blue and grey) plus an earth.
The hob is rated at 7400 watts and a 32amp MCB recommended.

Last year an electrician changed our consumer unit and installed a separate 32 amp circuit for the previous old

ceramic hob. That work is all signed off and certificated.

My concern is that the cables for the new replacement hob appear to be only 1.5mm sq and even though there are 2 of each, is 3mm sq cable up to carrying 32 amps?

I'd welcome any reassurances, or even suggestions that maybe upgrading to a 5 core 2.5mm sq cable might be better or am I just being daft?

James · Sep 24, 2020

If the flex was factory fitted and the installation instructions explain how to fit it, then follow them and it is likely to be compliant.

However, some of these hobs are designed to run at 400v across 2 phases. Ensure that you have the right model and check again just to be sure.

Always learnin · Sep 24, 2020

James said:
If the flex was factory fitted and the installation instructions explain how to fit it, then follow them and it is likely to be compliant.

However, some of these hobs are designed to run at 400v across 2 phases. Ensure that you have the right model and check again just to be sure.

Thank you James.
The cable wasn't factory fitted, it came with the appliance all sealed up together from a major UK retailer (AO.com). These 2 pics are from the connection instructions and I'm working on an "assumption" that diagrams "1N" apply.
Interesting enough, 2 other Bosch appliances, an oven and built in microwave, came with standard 2 core and earth cables, factory fitted.