Oil Boiler Isolation Switch.

Zoomup over 5 years ago

Evenin' All,

Regarding an external ground sited domestic oil fired boiler for heating and hot water that has an internal switched fused connection unit nearby inside the house, what regulations will require an external electrical isolator adjacent to the oil boiler? You know the sort of thing, a double pole rotary isolator.

Z.

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0 Chris Pearson over 5 years ago

mapj1:

... and all rotary controls to "wind up" intuitively, i.e. increase clockwise, all this 'human factors' stuff is nothing new in the last 50 years, but for for software it seems folk forget it.

Except that ordinary water taps increase anti-clockwise, as do the controls on my cooker.

The key to good software design is to assume that users will do stupid things. ?
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0 Chris Pearson over 5 years ago

mapj1:

... and all rotary controls to "wind up" intuitively, i.e. increase clockwise, all this 'human factors' stuff is nothing new in the last 50 years, but for for software it seems folk forget it.

Except that ordinary water taps increase anti-clockwise, as do the controls on my cooker.

The key to good software design is to assume that users will do stupid things. ?
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Oil Boiler Isolation Switch.

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