250.32 (A), Exhibit 250.19

[INGMRS]

Hello Sirs,

I have a doubt regarding the connection between this two grounding electrodes, i uderstand that this is to comply the 250.4(A)(1), specifically atmosferic discharges, however this is my doubt:

Why is not required a jumper conductor to get equalization state between the two separate grounding electrode systems? a lighting transient can rise through the grounding electrode conductor and create a current loop between both electrodes through the feeders. EMC

I mean a transient (8/20s) could be induced to this feeders, and eventually bring out hazard in wherever branch circuit over...

If somebody knows the answer to my doubt i will appreciate the help.

Regards,

 

[don_resqcapt19]

See 250.106

 

[bwat]

Why is not required a jumper conductor to get equalization state between the two separate grounding electrode systems?

250.50 does require all present electrodes to be connected together, if that’s what you were looking for.

 

[INGMRS]

See 250.106

Hi

Thanks for your answer,

My doubt is regarding the connectión, as i understand if I install two grounding rods, both should be bonded by an underground conductor, however the 250.32 says that if you have these two electrodes in separate building or structures, you can use the EGC to bond them together, and my concern is regarding the hazard if a lightning strikes any building and goes through the feeders, due to this high pulse event, the load in each building could be affect .

I don't know if i have been clear with my idea.

Thanks in advance