today's fault

[telectrix]

I dont know if you looked at this post Tel.

hot tubs

just read through it. at the end of the day, my remit is to replace a damaged SWA. but in the process, comply with current regs. and make as safe as possible. also , i'm not happy with the supply being fed from the 1 RCD in the split board in the house, as a fault on the hot tub or in the garage will knock out all the house socket circuits. i need a closer look at the tub ( rating, mounting, any extraneous parts, etc., before finalizing the job.

 

[topquark]

funny, was just thinking about earthing arrangement. it's TNC-S and the hot tub is mounted on wooden decking. from what i saw , there is no integral RCD protection. that came from the plug-on power breaker in the pic. would you recommend using the PME earthing ( as it was ) but banging in a rod at the hot tub as well?

i've read through section 702 as being the nearest reg. reference ( swimming pools and other basins) . can't find any reference in the bgb to hot tubs per se.

Any chance of getting the manuf instructions Tel? They often stipulate installing a rod at the tub end.

 

[telectrix]

no instructions. client inherited tub when they bought the house. as i said earlier, it was bucketing down yestrday, so will have to go back and check rating etc., but as it has been running in a 13A plug-in for the last 7 years or so, i am working on the basis that it's no more than 3kW.

 

[Engineer54]

Sorry i got it wrong, it was GN7 that was being quoted!! lol!!
But even here, it's still not clear what rules/reg's an external hot tub/jacuzzi fall under.... Taking a wild stab, i'd say they have more in common with an outdoor swimming pool than other basin's... lol!!

Originally Posted by spark 68

Just out of interest, what does a Jaccuzi fall under ?, would it be under swimming pools and other basins ?, or just under normal bathroom regs ?

A look though GN7 suggests you can use PME for swimming pools and other basins (Zone 2), but with a requirement to have an earthmat or earth electrode 20 ohms or less to be installed and connected to the protective equipotential conductor. 702.410.3.4.3 ​

As far as manufacturers instructions go, you could always try the companies website, they may just have PDF files for their equipment. Or even contact them direct for guidance...

​

 

[ipf]

Well...yes, someone comes here politely asking for a bit of advice and gets bombarded with interrogation and accusations by the usual do gooder, electrical police types. Why should someone who's only ever worked on new builds know what cable was made out of in the 50's. Its not as if they teach it at college.

He might have been working on new builds for a long time. Does'nt seem like it though.
Anyone who thinks we were ever using steel as a cable conductor in house wiring has to come under a great deal of suspicion. May be polite, may also be very inexperienced.

Basics:mickey:

 

[UNG]

He might have been working on new builds for a long time. Does'nt seem like it though.
Anyone who thinks we were ever using steel as a cable conductor in house wiring has to come under a great deal of suspicion. May be polite, may also be very inexperienced.

Basics:mickey:

I was thinking the same myself