Describe safety precautions to be taken when working on three phase systems?

Answer 1

It depends on several factors. These include:

a) The voltage level of the equipment
b) The type of work being performed
c) The classification of the workers

Here are some examples:

Working on 3-phase 120/208 V equipment is far different from a 12 kV distribution feeder. Above 34 kV, very little work is performed live unless you're hanging from a helicopter.

Qualified line workers are specifically trained on live line work practices. Very little live work is performed in substations. Overhead distribution line work does a large portion with energized equipment. If will depend on the local work practices.

There are also lock-out tag-out procedures to isolate equipment and prevent others from energizing equipment while people are working on it.

Answer 2

You mean tagging the thing out locking off the power supply or any other form of stored energy like springs or capacitors,
making sure the person doing the work is suitably trained, and creating a permit to work.

Cause thats about it .

Answer 3

these systems would have to have very high temperatures and pressures ..you have to make sure that the system is safely contained and stable...you basically just need the regular saftey precautions that you would take when dealing with high temperatures

Answer 4

Keep your knees together if female... think of Cherrie Blair if male

Answer 5

electricity at work act calls for isolation and earthing at all points of supply.

Permit for work required as well......

Answer 6

you will have too ask more than that
what are you doing to start with.?

Answer 7

SWITCH IT OFF..........Before you start