Earth Bonding under boiler

[Legion]

There is no requirement in the 17th to have to bond under a boiler, only at the point of entry of the building for the gas pipe.

Unless a customer wants to pay a spark seperately for electrical work we all know that most of us will install simple electrical jobs to keep costs down. I have asked Corgi, how far I need to go as the installer. I have already stated what they have told me. You do it your way, I`ll do it mine. It`s not hard to understand.

 

[bengasman]

Would have done little good, you need a multifunction meter for that as you have to measure to 10 mOhms accurate. And technically speaking, impedance at 50Hz rather than resistance; not that that would make a lot of difference on thick, straight single-core cables or a jig.

Multifunction meter, yeah, will get one, they sell them at this great website I have found ``howgullibledoyuthinkiam.co.uk`` try it, it`s brill.

Try googling "multifunction tester" or "megger 1500"

"All round" ones have the following functions all in one machine:
Impedance 10mOhm - 1MOhm+
Voltage: generally 0 -500+
Continuity
Insulation resistance 500MOhm
RCD test sequence
Prospective Fault Current and/or Earth Fault Loop Impedance

Hence the name: Multifunktion tester/meter

If you haven't seen your spark use one, I doubt he is a very good at his job; a spark without a multifunktion tester is like a RGI without a u-gauge.

 

[Legion]

700 quid! you are having a laugh, manage with a cheapo multimeter mate, that`s all I need that and technical helpline.

 

[bengasman]

700 quid! you are having a laugh, manage with a cheapo multimeter mate, that`s all I need that and technical helpline.

Would be most obliged if you could tell me where to get a cheapo multimeter that measures impedance down to 10 milliOhms; as I work in London, I have to carry the expensive kit into every job I go on the days that I have it with me, as I can't leave it in the motor. And at 90 quid per calibration, buying a new one once a year would be a lot cheaper too.

 

[Legion]

Would be most obliged if you could tell me where to get a cheapo multimeter that measures impedance down to 10 milliOhms; as I work in London, I have to carry the expensive kit into every job I go on the days that I have it with me, as I can't leave it in the motor. And at 90 quid per calibration, buying a new one once a year would be a lot cheaper too.

Wicke`s 20 quid a pop, never let me down.

 

[bengasman]

Would be most obliged if you could tell me where to get a cheapo multimeter that measures impedance down to 10 milliOhms; as I work in London, I have to carry the expensive kit into every job I go on the days that I have it with me, as I can't leave it in the motor. And at 90 quid per calibration, buying a new one once a year would be a lot cheaper too.

Wicke`s 20 quid a pop, never let me down.

Won't exactly measure milliOhms accurately, will it?

 

[Legion]

Depends what your working on, what you working on?

 

[bengasman]

Depends what your working on, what you working on?

I believe the thread was about bonding, for which you require an impedance reading of 10 milli Ohms accuracy, or in other words: 0.01 Ohm.

 

[bengasman]

The above reminds me of something, going back to the subject of the thread, I seem to remember that no supplementary bonding is required if impedance between the various parts is below 50 mOhms.
Is that correct? I know it is fairly rare, but theoretically?

 

[Legion]

If I`m honest, I couldn`t care less, don`t get that involved in bonding, as I say, multimeter gets me through on most jobs, anything beyond me I`ll ask Techs.


Off to Bo Bo`s Nite all............zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

 

[baxpoti]

There is no requirement in the 17th to have to bond under a boiler, only at the point of entry of the building for the gas pipe.

That's a poorly written statement.

BS7671 reg 411.3.1.2 contradicts your 'only'