On 07/03/2019 14:30, john west wrote:
I need to get a gas jet off the hob to have a clean out of the nozzle
and any debris in the supply pipework.

Have been told to disconnect the mains electric as its difficult to blow
any debris out the pipework with the gas blowing, without setting of the
electric spark ignition.

They say setting of the spark whilst blowing gas out is dangerous.
In this particular situation its very difficult to turn off the electric
supply.Â*Â*Â* (Its connected behind a nearby microwave, that i really don't
want to take out of its position; to get at this connection).

Is it really that dangerous, even if it ignites gas coming out of he
pipework?

Since I'll be there all the time watching over it.Â*Â* Any suggestions
please?

I'd be more worried about getting a shock, but burns are a possibility.
Just throw the local breaker / pull the fuse at the consumer unit.