Heartsaver First Aid Part I Progress Indicator: Question 4 of 22 4.  Pump transfers. -- When diesel fuel is transferred by means of a pump and a hose equipped with a nozzle containing a self-closing valve, a powered pump may be used only if: the pump ________________.  [405(b)(2)] Choices: is equipped with an accessible emergency shutoff switch is provided with an on-off switch that is within easy reach uses no more than 12 volts of electricity is fully grounded to the electrical system