Maximum current is defined by the rated KW of the device, say Motor. The motor may not run at its maximum rated capacity all the time. Nominal current is drawn when motor runs at nominal load.
decribe two causes of higher than normal starter current draw
The most significant part of the equation is, what will be the maximum current draw? If it's to be a small current draw, for example 40 Amp service (40 amp breaker), you'll use 8AWG wire that's rated for direct burial. Higher current rating will require larger wire. As always, if you have any questions about the proper wiring or how to connect electrical service, contact a local electrical contractor. Understand that improper wiring can result in fire and/or death.
Current draw and length.
If the frequency is kept the same, you will overexcite the transformer, and it will draw excessive current (similar to inrush currents). Insulation tests are performed on transformers above nominal voltage, but they are performed at higher than rated frequency to keep the volts per hertz roughly equal to prevent overexciting the core.
Locked rotor current is the amount of current a motor would draw if you energize the motor and the rotor (the spinning shaft) doesn't spin.
Maximum Current draw - 20 (milliamperes)
The fuse or breaker should be no bigger than specified for the wiring and devices on the circuit. Your nominal current draw may be 20 amps, but a short circuit would cause maximum current to flow which in this case would be 100 amps until the fuse blew.
2160 / 240 = 9 amps.
bore of the pipe is the internal diameter of pipe but the nominal diameter of pipe is the dia of a circle which is draw through a point which is situates at exactly half of the thickness of pipe or we can say that (outer dia of pipe- thickness of pipe )=nominal bore of pipe.
Its the nominal output of a electric charger required to run a certain device. The charger is designed to provide 9volts up to a current draw of .6 of an amp. The device it powers will need 9volts and a maximum current draw of .6 of an amp to charge/run it properly. Think of a water tank in a house being fed from the water main. The voltage is the head of water in the tank. Turn on the tap and the current is the rate of water flow. The water can only be supplied at a certain rate. Exceed the rate and the head of water (voltage) drops and needs to be replenished.
AC. is alternating current and Dc is direct current. alternating equivalant to pulsating electricity while direct is a constant draw with little fluxuation.
When testing the current draw your digital multimeter should be set on the current.
Draw a circle then put p for proton and n for neutron the draw a circle over the circle then you take the how many atomic number and the atomic mass and subtract the mass by the number lets use n 14-7=7 then you draw 2 x's that is the maximum the first shells can fit then draw draw 5 shells but the maximum for that is 8 and the maximum for the other one is eight.
As well as motors, contactors also have kW and Ampere ratings. Have a look on the name plate of your motor and you will see its maximum current draw (amps). Select a contactor with a current rating greater than this.
decribe two causes of higher than normal starter current draw
You would need to know the weakest point in the power distribution and you'd need to know the peak and nominal current draw in Amperes. If it's a device that uses a surge of current at startup but only a fraction of that during normal operation, you would need a "slow-blow" fuse. If the current draw is consistent you would need a conventional fuse. Still have no idea what the "head unit" is that you're trying to fuse.
all electric heaters draw a lot of current (voltage times current = watts [or power]) and a toaster heats bread (no it toasts Bread)