Restaraunt earthing

[Cirrus]

Posted about this yesterday but the thread has been lost in the crash.

Went out today to have a look at the kitchen and none of the stainless steel food prep work benches are earthed. The sink etc isn't earthed either. There may be some faulty equipment too which is causing the staff to experience 'shocks' but I wasn't able to investigate that closely as they were working in the kitchen. Nothing that I could see was PAT tested either. So, naturally I will recommend a PAT test of all necessary appliances but with regards to the earthing - would it be ok to take a 6mm earth from the earth bar on the C/U and loop on to each of the work benches? IS that satisfactory?

Also, they have a single phase 100A supply with 3 C/U's being run off it. There was a fair amount of heat coming from the 25mm tails and the 100A 1361 fuse was rather warm too. Any suggestions?

 

[NozSpark]

I'd have thought that if you were doing any type of bonding that it'd be supplimentary... i.e. not connected to the main earth, just local circuits and metal work

PATting sounds like a good idea!

Hot supply ---- recommend that they get 3 phase in??

but I bet they won't!! as a minimum you should get them to allow you to calculate their demand requirements..

 

[Lurch]

Also, they have a single phase 100A supply with 3 C/U's being run off it. There was a fair amount of heat coming from the 25mm tails and the 100A 1361 fuse was rather warm too. Any suggestions?

Use a bigger fuse. Seriously though, check the cable and loading calcs for the installation, and also get a clamp meter in action. If it is all a bit overloaded only real option is upgrading the supply and going from there.