Ze of TT above 200ohms

by Steve on February 23, 2009

 

Q

Is a Ze of greater than 200 ohms acceptable on a TT System?

A

A Ze greater than 200Ω is considered unstable and it may be prudent to install further electrodes.

See Regs  Table 41.5 note 2.

 ElectriciansBlog.co.uk

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