100ma RCD

[Spudnik]

I have recently renewed a CU on a TT system.

100mA RCD as main switch in meter cabinet with wylex rewireables.

Therefore converted to PME, new, dual RCD CU, left 100mA in situ.

Couldnt really see the point in ripping that out and replacing with a main switch.

 

[Risteard]

So long as it discriminates then there is no Regulation breached.

 

[davelerave]

100mA TD upstream and all final circuits having 30mA protection then it shouldn't give trouble

SP rcbo's downstream might take out a DP rcbo as the N-E fault isn't cleared by them

 

[Jurasic Spark]

I have recently renewed a CU on a TT system.

100mA RCD as main switch in meter cabinet with wylex rewireables.

Therefore converted to PME, new, dual RCD CU, left 100mA in situ.

Couldnt really see the point in ripping that out and replacing with a main switch.

Who did this you or the supply authority?

 

[davelerave]

we used to have a dodgy TT system here at one stage( pre-rcd days)

i think the TT with all circuits 30mA protected may be safer than T-N-C-S

you'd need to confirm suitability-suppliers neutral multiple grounding and secure connnection to trafo

wouldn't be desirable to be the sole tn-c-s in a TT area either

 

[ezzzekiel]

Who did this you or the supply authority?

im pretty sure he got dno for the conversion

 

[8145keith]

Hi there,

Definitely code 1 no bonding to water service

The rest code 2 s and code 4s

Regards KJ

 

[ezzzekiel]

eh ?

 

[oxford 12]

100mA rcds in tt systems comply with previous regs ,so are only code 4

 

[Benny_Boy]

The brand is 3-IN-ONE professional, high performance lubricant.

Drives out moisture
dramatically reduces frition and wear

Isn't spraying a flammable liquid onto a area where arcing is going to be present something of a fire risk?

Better to use some teflon cycle lubricant in a pump not an aerosol.

 

[devon1]

Isn't spraying a flammable liquid onto a area where arcing is going to be present something of a fire risk?

Better to use some teflon cycle lubricant in a pump not an aerosol.

Good point, it is flammable liquid, better to use non flammable lubricant