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Limiting maximum demand

t’s one of the TB’s “general safety principles” that “the maximum demand of the electrical installation must not exceed the rating of the generator”.

 This could require a lot of disconnection / isolation of circuits, which would late all need to be re-instated. Luckily there’s a far simpler solution – maximum demand by limitation- which is how we normally do it for mains, typically using the rating of the supply fuse as the load-limiting device.

 So all we need to do is use an over-current device to limit the current that can be drawn. This could be the overload protection within the genset, or a separate device within the installation; eg upstream of the main switch(es).