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tishot
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Join Date: Mar 2011
Posts: 4

Why Do We Have to Earth an RMU When Carrying Out Maintenance?

03/13/2011 5:05 PM

I know that this is for safety reasons, And that the incoming and outgoing cables must be connected to earth. What i want to know is what is the potential hazard if this is not done.
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jack of all trades
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New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

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#1

Re: Why Do We Have to Earth an RMU When Carrying Out Maintenance?

03/13/2011 8:06 PM

What i want to know is what is the potential hazard if this is not done.

Quite simply, a potential current path through the maintenance worker holding a potentially livened cable and ground = serious electric shock or death.

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TonyS
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#2

Re: Why Do We Have to Earth an RMU When Carrying Out Maintenance?

03/13/2011 8:33 PM

If you know it's for safety reasons why are you asking the question?

During testing earths may be removed. But this is to be done by a suitably qualified engineer.

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KJK/USA
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#3

Re: Why Do We Have to Earth an RMU When Carrying Out Maintenance?

03/14/2011 8:49 AM

"What i want to know is what is the potential hazard if this is not done"

The potential hazard - not earthing so can make you dead!

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#4

Re: Why Do We Have to Earth an RMU When Carrying Out Maintenance?

03/15/2011 9:58 AM

The hazard is electrocution.

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