commercial testing

[DPG]

aaelectric, can you expand on point 3 as per odawire's previous post. Daz

IGNORE THIS POST - I missed the one about 2.5 T&E and massage parlours Daz

 

[DPG]

Fire alarm supply is fine. No code

Definately? Daz

 

[aaelectric]

james_t87 so if 1.5 was connected to a 13amp fused spur from a ring final with a 32amp mcb you would not code that.

 

[GLENNSPARK]

james_t87 so if 1.5 was connected to a 13amp fused spur from a ring final with a 32amp mcb you would not code that.

why would you?...
think about it....13A fused spur give you a clue?

 

[Engineer54]

james_t87 so if 1.5 was connected to a 13amp fused spur from a ring final with a 32amp mcb you would not code that.

Oh dear, O dear, O dear!!

 

[somersetsparks]

so if 1.5 was connected to a 13amp fused spur from a ring final with a 32amp mcb you would not code that.

• Very common misconception especially among domestic sparks I find, I alwyays remind them of a busbar, you wouldn't take 95mm from a busbar to a 5a switch fuse would you?, most people can see that but can't apply it to a domestic situation.
  I got handed a load of repairs from minor tests on new build houses, on every one was a c2 for a cooker hood spurred from the cooker switch in 1.0mm, even though the switched spur was right next to the switch!

 

[somersetsparks]

Do you hold 2391 or equivalent?



Maybe stick to domestic then? Competence and experience go hand in hand IMHO. As an example; you could be the best domestic spark in the world but if you've never worked on three phase, how could you deem yourself competent to do so? Similarly, if you are only used to testing domestic, there's nothing to say you're not competent to do so, but when you start asking questions like "Do the same regs apply in commercial installations?" you unfortunately open yourself up for people to question your competence to carry out work on commercial installations.



It is perfectly acceptable to install 230V ventilation equipment in zone one providing it is IPX4 and meets all other requirements of BS7671. Pre 17th ed that would mean no 30mA RCD protection would have been required. (I'm assuming the install is pre 17th ed.)

When reading the onsite guide recently I noticed that ALL equipment in zone 1 should be IPx5? It would seem to cover all fixed permanently connected equipment, although I have always gone on ipx4? anyone else noticed?[/QUOTE]

 

[D Skelton]

When reading the onsite guide recently I noticed...

The onsite guide is full of errors like this, hence why I never read it other than for the appendices. All you need to know from then on is in the BGB

 

[somersetsparks]

I don't have my own BGB so can't check. I have however always gone on the ipx4 rule. Cheers.

 

[MDJ]

I don't have my own BGB so can't check. I have however always gone on the ipx4 rule. Cheers.

You do have access to one though ?