Maximum zs generator and rubber box

[UPS]

On a generator that value is not much use, that meter calculates the value it doesn’t measure it. It doesn’t take in to account any of the characteristics of the alternator or the engine.

So how do I know that I am going to achieve disconnection times required?

 

[davesparks]

So how do I know that I am going to achieve disconnection times required?

You’ll need to characteristics of the generator to establish the available fault current by calculation or from the data sheet for the generator.
For all the generator setups I am involved with I use variable earth leakage relays to achieve fault protection.

 

[LeeH]

I’m going to embarrass myself here and ask what a rubber box is.

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Great posts from Davesparks btw.

 

[UPS]

I’m going to embarrass myself here and ask what a rubber box is.

?

Great posts from Davesparks btw.

Just like a waterproof box with sockets mounted on it.

 

[davesparks]

I’m going to embarrass myself here and ask what a rubber box is.

?

Great posts from Davesparks btw.

Rubber box is a company who manufacture distribution units (usually referred to as distro) for temporary installations, usually made of tough rubber.
The term rubber box has come to mean any rubber distro, much the same as vacuum cleaners being referred to as hoovers.

 

[shaun1]

You’ll need to characteristics of the generator to establish the available fault current by calculation or from the data sheet for the generator.
For all the generator setups I am involved with I use variable earth leakage relays to achieve fault protection.

Out of interest, how do you protect against Line to neutral faults?