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YTSOxford

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hi, I am helping second fixing an outbuilding and am having to order materials online. The building won't be pulling any more than 60Amps, ( since it is submained on a 63A breaker. We are also putting it on its own rod as the bonding conductors on the existing house aren't up to speck. What size rod would you guys recommend trying??? 14mm or 9mm??? Don't want to look a oron when they come to testing.:) Cheers all!
 
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Z

zion

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hi, I am helping second fixing an outbuilding and am having to order materials online. The building won't be pulling any more than 60Amps, ( since it is submained on a 63A breaker. We are also putting it on its own rod as the bonding conductors on the existing house aren't up to speck. What size rod would you guys recommend trying??? 14mm or 9mm??? Don't want to look a oron when they come to testing.:) Cheers all!
14mm wont bend as easy,the width will not make any difference to the reading. It's about geting the desired depth. They are normaly 1.2M long and you may well need 2 in series (1 No 2.4 meter rod) or more if the ground is chalky or dry. Try to hit the water table and you will get a good reading. Many years dealing with earth rods for Lightning Protection of buildings!
 
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