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yes i understand what your saying but i dont completely understand that question, thats why i dont know the correct answer /

yes perhaps your right but never thought of that one, sorry :( the only 1 i dont really understand is Where it is necessary to turn off the isolating cock and disconnect a union to make a repair, what are the minimum safety requirements to be carried out? i would say temp earth bonding if on...

dont mean to offend any one or cause any arguments just want to double check if ive found the correct answers ?

ive done loads research just checking to see if ive the correct answers mate before submitting, no harm in getting a second opinion of an expert is there ?

also need another answer please . Where it is necessary to turn off the isolating cock and disconnect a union to make a repair, what are the minimum safety requirements to be carried out ? thanks paul

hi all im doing a college course & need a few answers if any one can help please ? When Natural gas is completely burned what are the two main constituents of the products of combustion? When checking the polarity on a central heating system from an existing spur the approximate reading...